9. 修改员工信息
1.同上
2.修改if else if和go to 语句
主:
case 4: printf("********修改工资信息.********\n"); ModifySeqList(&ST); CountSeqList(&ST); break;
分:
void ModifySeqList(SeqList* ps) { char name[20] = { 0 }; printf("请输入您要修改的员工信息的员工姓名:>"); scanf("%s", name); int pos = FindByName(ps, name); if (pos == -1) { printf("当前系统中不存在名字为%s的员工.\n", name); return; } char choice[20] = { 0 }; rechoice: printf("请输入你要修改的信息项目名称"); printf("(提示:您可选择输入员工工号,基本工资,奖金,扣款,税款):>"); scanf("%s", choice); printf("请输入修改后的该信息项目值:>"); if (strcmp(choice, "员工工号") == 0) { scanf("%s", ps->emp[pos].id); } else if (strcmp(choice, "基本工资") == 0) { scanf("%lf", &(ps->emp[pos].InitWages)); } else if (strcmp(choice, "奖金") == 0) { scanf("%lf", &(ps->emp[pos].bonus)); } else if (strcmp(choice, "扣款") == 0) { scanf("%lf", &(ps->emp[pos].deduct)); } else if (strcmp(choice, "税款") == 0) { scanf("%lf", &(ps->emp[pos].taxes)); } else { printf("请在提示中给出的选项中做出选择!\n"); goto rechoice; } printf("修改成功.\n"); }
10. 按照工资排序
1.快速排序的原理
主:
case 5: printf("********按照工资排序.(从高到低)********\n"); QsortByFinaWages(&ST,0,ST.size); PrintSeqList(&ST); break;
分:
void QsortByFinaWages(SeqList* ps, int begin, int end) { if (begin >= end) { return; } int keyi = begin; int left = begin, right = end; while (left < right) { while (left < right && ps->emp[right].FinaWages <= ps->emp[keyi].FinaWages) { right--; } while (left < right && ps->emp[left].FinaWages >= ps->emp[keyi].FinaWages) { left++; } Swap(&(ps->emp[left]), &(ps->emp[right])); } int meeti = left; Swap(&(ps->emp[keyi]), &(ps->emp[meeti])); QsortByFinaWages(ps, begin, meeti - 1); QsortByFinaWages(ps, meeti+1, end); }
11.按照工号排序
1.直接插入排序
2.希尔排序的原理
主:
case 6: printf("********按照工号排序.(从小到大)********\n"); ShellSortById(&ST); PrintSeqList(&ST); break;
分:
void ShellSortById(SeqList* ps) { int gap = ps->size; while (gap > 1) { gap = (gap / 3 + 1); for (int i = 0; i < ps->size - gap; i++) { int end = i; Employee temp = ps->emp[i + gap]; while (end >= 0) { if (strcmp(ps->emp[end].id , temp.id)>0) { ps->emp[end + gap] = ps->emp[end]; end -= gap; } else { break; } } ps->emp[end + gap] = temp; } } }
12. 计算工资信息
数学计算
主:
case 7: printf("********计算员工工资********\n"); CountSeqList(&ST); printf("计算成功.\n");
分:
void CountSeqList(SeqList* ps) { for (int i = 0; i < ps->size; i++) { ps->emp[i].NextWages = ps->emp[i].InitWages + ps->emp[i].bonus - ps->emp[i].deduct; ps->emp[i].FinaWages = ps->emp[i].NextWages - ps->emp[i].taxes; } }
13.打印工资信息
格式控制
主:
case 8: printf("********打印工资信息********\n"); PrintSeqList(&ST); break;
分:
void PrintSeqList(SeqList* ps) { printf("%-20s %-20s %-10s %-10s %-10s %-10s %-10s %-10s\n", "员工姓名", "员工工号", "基本工资", "奖金", "扣款", "应发工资","税款","实发工资"); for (int i = 0; i < ps->size; i++) { printf("%-20s %-20s %-10.2lf %-10.2lf %-10.2lf %-10.2lf %-10.2lf %-10.2lf\n",\ ps->emp[i].name,ps->emp[i].id, ps->emp[i].InitWages, ps->emp[i].bonus, ps->emp[i].deduct,ps->emp[i].NextWages,ps->emp[i].taxes,ps->emp[i].FinaWages); } }
14. 统计员工总数
1. case 9: 2. printf("********统计员工人数********\n"); 3. printf("当前系统人数:%d\n", ST.size);
15.default语句
1. default: 2. printf("********输入错误,请重新输入********\n"); 3. break;
16.源代码
//Employee.c #define _CRT_SECURE_NO_WARNINGS 1 #define _CRT_SECURE_NO_WARNINGS 1 #include<stdio.h> #include<stdlib.h> #include<string.h> #include<windows.h> typedef struct Employee { char name[20]; char id[20]; double InitWages; double bonus; double deduct; double NextWages; double taxes; double FinaWages; }Employee; typedef struct SeqList { Employee* emp; int size; int capacity; }SeqList; void CheckCapacity(SeqList* ps) { if (ps->size == ps->capacity) { int newcapacity = 2 * ps->capacity; Employee* temp = (Employee*)realloc(ps->emp,sizeof(Employee) * newcapacity); if (temp==NULL) { perror("CheckCapacity::realloc"); return; } ps->emp = temp; ps->capacity = newcapacity; printf("扩容成功\n"); } } void LoadSeqList(SeqList* ps) { FILE* pf = fopen("D:\\桌面\\test.txt", "rb"); if (pf == NULL) { perror("LoadSeqList::fopen"); return; } Employee temp = { 0 }; while (fread(&temp, sizeof(Employee), 1, pf)) { CheckCapacity(ps); ps->emp[ps->size] = temp; ps->size++; } fclose(pf); pf = NULL; } void InitSeqList(SeqList* ps) { ps->emp = (Employee*)malloc(sizeof(Employee) * 4); if (ps->emp == NULL) { perror("InitSeqList::malloc"); return; } ps->size = 0; ps->capacity = 4; LoadSeqList(ps); } //菜单函数 void Meau(void) { printf("--------------------------------\n"); printf("--- 欢迎来到员工工资管理系统 ---\n"); printf("--------------------------------\n"); printf("---- 0.退出程序 ----\n"); printf("---- 1.增加工资信息 ----\n"); printf("---- 2.删除工资信息 ----\n"); printf("---- 3.按名字查工资 ----\n"); printf("---- 4.修改工资信息 ----\n"); printf("---- 5.按照工资排序 ----\n"); printf("---- 6.按照工号排序 ----\n"); printf("---- 7.计算员工工资 ----\n"); printf("---- 8.打印工资信息 ----\n"); printf("---- 9.统计员工人数 ----\n"); printf("-------------------------------\n"); } void SaveSeqList(SeqList* ps) { FILE* pf = fopen("D:\\桌面\\test.txt", "wb"); if (pf == NULL) { perror("LoadSeqList::fopen"); return; } for (int i = 0; i < ps->size; i++) { fwrite(ps->emp + i, sizeof(Employee), 1, pf); } fclose(pf); pf = NULL; } void InitEmployee(Employee* ps, int i) { printf("请输入第%d位待插入的员工工资信息:\n",i); printf("请输入员工姓名:>"); scanf("%s", ps->name); printf("请输入员工工号:>"); scanf("%s", ps->id); printf("请输入员工的基本工资:>"); scanf("%lf", &(ps->InitWages)); printf("请输入员工的奖金:>"); scanf("%lf", &(ps->bonus)); printf("请输入员工的扣款:>"); scanf("%lf", &(ps->deduct)); printf("请输入员工的税款:>"); scanf("%lf", &(ps->taxes)); } void AddSeqList(SeqList* ps, Employee temp) { CheckCapacity(ps); ps->emp[ps->size] = temp; ps->size++; printf("增加成功.\n"); } int FindByName(SeqList* ps,char* name) { for (int i = 0; i < ps->size; i++) { if (strcmp(name, ps->emp[i].name) == 0) { return i; } } return -1; } void DelSeqList(SeqList* ps) { if (ps->size == 0) { printf("当前员工总数为0,无法删除.\n"); } char name[20] = { 0 }; printf("请输入您要删除的员工信息的员工姓名:>"); scanf("%s", name); int pos = FindByName(ps,name); if (pos == -1) { printf("当前系统中不存在名字为%s的员工.\n", name); return; } else { int begin = pos + 1; while (begin < ps->size) { ps->emp[begin -1] = ps->emp[begin]; begin++; } ps->size--; } printf("删除成功.\n"); } void SearByName(SeqList* ps) { char name[20] = { 0 }; printf("请输入您要查询的员工信息的员工姓名:>"); scanf("%s", name); int pos = FindByName(ps, name); if (pos == -1) { printf("当前系统中不存在名字为%s的员工.\n", name); return; } else { printf("%-20s %-20s %-10s %-10s %-10s %-10s %-10s %-10s\n", "员工姓名", "员工工号", "基本工资", "奖金", "扣款", "应发工资", "税款", "实发工资"); printf("%-20s %-20s %-10.2lf %-10.2lf %-10.2lf %-10.2lf %-10.2lf %-10.2lf\n", \ ps->emp[pos].name, ps->emp[pos].id, ps->emp[pos].InitWages, ps->emp[pos].bonus, ps->emp[pos].deduct, ps->emp[pos].NextWages, ps->emp[pos].taxes, ps->emp[pos].FinaWages); } } void ModifySeqList(SeqList* ps) { char name[20] = { 0 }; printf("请输入您要修改的员工信息的员工姓名:>"); scanf("%s", name); int pos = FindByName(ps, name); if (pos == -1) { printf("当前系统中不存在名字为%s的员工.\n", name); return; } char choice[20] = { 0 }; rechoice: printf("请输入你要修改的信息项目名称"); printf("(提示:您可选择输入员工工号,基本工资,奖金,扣款,税款):>"); scanf("%s", choice); printf("请输入修改后的该信息项目值:>"); if (strcmp(choice, "员工工号") == 0) { scanf("%s", ps->emp[pos].id); } else if (strcmp(choice, "基本工资") == 0) { scanf("%lf", &(ps->emp[pos].InitWages)); } else if (strcmp(choice, "奖金") == 0) { scanf("%lf", &(ps->emp[pos].bonus)); } else if (strcmp(choice, "扣款") == 0) { scanf("%lf", &(ps->emp[pos].deduct)); } else if (strcmp(choice, "税款") == 0) { scanf("%lf", &(ps->emp[pos].taxes)); } else { printf("请在提示中给出的选项中做出选择!\n"); goto rechoice; } printf("修改成功.\n"); } void Swap(Employee* a, Employee* b) { Employee temp = *a; *a = *b; *b = temp; } void QsortByFinaWages(SeqList* ps, int begin, int end) { if (begin >= end) { return; } int keyi = begin; int left = begin, right = end; while (left < right) { while (left < right && ps->emp[right].FinaWages <= ps->emp[keyi].FinaWages) { right--; } while (left < right && ps->emp[left].FinaWages >= ps->emp[keyi].FinaWages) { left++; } Swap(&(ps->emp[left]), &(ps->emp[right])); } int meeti = left; Swap(&(ps->emp[keyi]), &(ps->emp[meeti])); QsortByFinaWages(ps, begin, meeti - 1); QsortByFinaWages(ps, meeti+1, end); } void ShellSortById(SeqList* ps) { int gap = ps->size; while (gap > 1) { gap = (gap / 3 + 1); for (int i = 0; i < ps->size - gap; i++) { int end = i; Employee temp = ps->emp[i + gap]; while (end >= 0) { if (strcmp(ps->emp[end].id , temp.id)>0) { ps->emp[end + gap] = ps->emp[end]; end -= gap; } else { break; } } ps->emp[end + gap] = temp; } } } void CountSeqList(SeqList* ps) { for (int i = 0; i < ps->size; i++) { ps->emp[i].NextWages = ps->emp[i].InitWages + ps->emp[i].bonus - ps->emp[i].deduct; ps->emp[i].FinaWages = ps->emp[i].NextWages - ps->emp[i].taxes; } } void PrintSeqList(SeqList* ps) { printf("%-20s %-20s %-10s %-10s %-10s %-10s %-10s %-10s\n", "员工姓名", "员工工号", "基本工资", "奖金", "扣款", "应发工资","税款","实发工资"); for (int i = 0; i < ps->size; i++) { printf("%-20s %-20s %-10.2lf %-10.2lf %-10.2lf %-10.2lf %-10.2lf %-10.2lf\n",\ ps->emp[i].name,ps->emp[i].id, ps->emp[i].InitWages, ps->emp[i].bonus, ps->emp[i].deduct,ps->emp[i].NextWages,ps->emp[i].taxes,ps->emp[i].FinaWages); } } int main() { int input = 0; SeqList ST; InitSeqList(&ST); do//先执行一次 { Meau(); printf("请输入您的选择(提示:请在0-9之间选择):>"); scanf("%d", &input); switch (input) { case 0: printf("欢迎您的使用,即将退出程序.\n"); SaveSeqList(&ST); break; case 1: printf("********增加工资信息.********\n"); int nums = 0; printf("请输入您要增加的员工信息的员工数量:>"); scanf("%d", &nums); Employee temp = { 0 }; for (int i = 1; i <= nums; i++) { InitEmployee(&temp,i); AddSeqList(&ST,temp); } CountSeqList(&ST); break; case 2: printf("********删除工资信息.********\n"); DelSeqList(&ST); break; case 3: printf("********查询工资信息.********\n"); SearByName(&ST); break; case 4: printf("********修改工资信息.********\n"); ModifySeqList(&ST); CountSeqList(&ST); break; case 5: printf("********按照工资排序.(从高到低)********\n"); QsortByFinaWages(&ST,0,ST.size); PrintSeqList(&ST); break; case 6: printf("********按照工号排序.(从小到大)********\n"); ShellSortById(&ST); PrintSeqList(&ST); break; case 7: printf("********计算员工工资********\n"); CountSeqList(&ST); printf("计算成功.\n"); break; case 8: printf("********打印工资信息********\n"); PrintSeqList(&ST); break; case 9: printf("********统计员工人数********\n"); printf("当前系统人数:%d\n", ST.size); default: printf("********输入错误,请重新输入********\n"); break; } } while (input); }
17.效果预览图
类似的,下面为学生信息管理系统
#define _CRT_SECURE_NO_WARNINGS 1 #include<stdio.h> #include<stdlib.h> #include<string.h> typedef struct Student { char name[20]; char id[20]; float ChiScore; float MatScore; float EngScore; float SumScore; }Student; typedef struct SeqList { Student* stu; int size; int capacity; }SeqList; void meau1(void) { printf("--------------------------------\n"); printf("--- 欢迎使用学生信息管理系统 ---\n"); printf("--------------------------------\n"); printf("---- 0.退出程序 ----\n"); printf("---- 1.录入学生信息 ----\n"); printf("---- 2.删除学生信息 ----\n"); printf("---- 3.查询指定课程 ----\n"); printf("---- 4.查询指定学生 ----\n"); printf("---- 5.修改学生信息 ----\n"); printf("---- 6.按照学号排序 ----\n"); printf("---- 7.按照总分排序 ----\n"); printf("---- 8.统计学生总数 ----\n"); printf("---- 9.打印学生信息 ----\n"); printf("--------------------------------\n"); } //case -1 初始化: 初始化函数(3) void CheckCapacity(SeqList* ps) { if (ps->size == ps->capacity) { int newcapacity = 2 * ps->capacity; Student* temp = (Student*)realloc(ps->stu, sizeof(Student) * newcapacity); if (temp == NULL) { perror("CheckCapacity::realloc:>"); return; } ps->capacity = newcapacity; ps->stu = temp; printf("扩容成功.\n"); } } void LoadSeqList(SeqList* ps) { FILE* pf = fopen("D:\\桌面\\test.txt", "rb"); if (pf == NULL) { perror("LoadSeqList::fopen:>"); return; } Student temp = { 0 }; while (fread(&temp, sizeof(Student), 1, pf)) { CheckCapacity(ps); ps->stu[ps->size] = temp; ps->size++; } fclose(pf); pf = NULL; } void InitSeqList(SeqList* ps) { ps->stu = (Student*)malloc(sizeof(Student) * 4); if (ps->stu == NULL) { perror("InitSeqList::malloc:>"); return; } ps->capacity = 4; ps->size = 0; LoadSeqList(ps); } //case 0 退出程序:保存数据到文件函数(1) void SaveSeqList(SeqList* ps) { FILE* pf = fopen("D:\\桌面\\test.txt", "wb"); if (pf == NULL) { perror("LoadSeqList::fopen:>"); return; } for (int i = 0; i < ps->size; i++) { fwrite(ps->stu + i, sizeof(Student), 1, pf); } fclose(pf); pf = NULL; } //case 1:录入学生信息 装配和插入函数(2) void InitStudent(Student* ps,int i) { printf("请输入第%d个待录入的学生信息:\n", i); printf("请输入学生的名字:>"); scanf("%s", ps->name); printf("请输入学生的学号:>"); scanf("%s", ps->id); printf("请输入学生的语文成绩(0-100):>"); scanf("%f", &(ps->ChiScore)); printf("请输入学生的数学成绩(0-100):>"); scanf("%f", &(ps->MatScore)); printf("请输入学生的英语成绩(0-100):>"); scanf("%f", &(ps->EngScore)); ps->SumScore = ps->ChiScore + ps->MatScore + ps->EngScore; } void AddSeqList(SeqList* ps,Student temp) { CheckCapacity(ps); ps->stu[ps->size] = temp; ps->size++; } //case 2:删除学生信息 菜单函数,定位和删除函数(4) void meau2(void) { printf("-- 1.按照名字查找 --\n"); printf("-- 2.按照学号查找 --\n"); } //找得到返回下标,找不到返回-1 int FindByName(SeqList* ps, const char* name) { for (int i = 0; i < ps->size; i++) { if (strcmp(ps->stu[i].name, name) == 0) { return i; } } return -1; } int FindById(SeqList* ps, const char* id) { for (int i = 0; i < ps->size; i++) { if (strcmp(ps->stu[i].id, id) == 0) { return i; } } return -1; } void DelSeqList(SeqList* ps) { if (ps->size == 0) { printf("当前学生总数为0,无法删除.\n"); return; } meau2(); int choice1 = 0; rechoice1: printf("请根据您要按何种方式查找到要删除的学生,输入相应的编号:>"); scanf("%d", &choice1); int pos = 0; if (choice1 == 1) { char name[20] = { 0 }; printf("请输入您要删除学生的学生姓名:>"); scanf("%s", name); pos = FindByName(ps, name); } else if (choice1 == 2) { char id[20] = { 0 }; printf("请输入您要删除学生的学生学号:>"); scanf("%s", id); pos = FindById(ps, id); } else { printf("选择错误,请重新选择(提示:请在1-2中选择).\n"); goto rechoice1; } if (pos == -1) { printf("您现在要删除的学生不存在当前学生信息管理系统中,请重新选择.\n"); goto rechoice1; } else { int begin = pos + 1; while (begin < ps->size) { ps->stu[begin - 1] = ps->stu[begin]; begin++; } ps->size--; printf("删除成功.\n"); } } //case 3: 查询指定课程 菜单函数,定位和杂碎函数(10) void meau3(void) { printf("-- 1.语文 --\n"); printf("-- 2.数学 --\n"); printf("-- 3.英语 --\n"); } void Swap(char* buff1, char* buff2,int width) { while (width--) { char temp = *buff1; *buff1 = *buff2; *buff2 = temp; buff1++; buff2++; } } int cmp_struct_by_ChiScore(const void* e1, const void* e2) { return ((Student*)e2)->ChiScore - ((Student*)e1)->ChiScore; } int cmp_struct_by_MatScore(const void* e1, const void* e2) { return ((Student*)e2)->MatScore - ((Student*)e1)->MatScore; } int cmp_struct_by_EngScore(const void* e1, const void* e2) { return ((Student*)e2)->EngScore - ((Student*)e1)->EngScore; } void BubbleSort(void* base, int size, int width, float (*cmp)(const void*, const void*)) { int flag = 0; for (int i = 0; i < size - 1; i++) { for (int j = 0; j < size-1- i; j++) { if (cmp((char*)base + j * width, (char*)base + (j + 1) * width) > 0) { Swap((char*)base + j * width, (char*)base + (j + 1) * width, width); flag = 1; } } if (flag == 0) { break; } } } void DisPlayByChiScore(SeqList* ps) { printf("%-20s %-20s %-20s %-20s\n", "姓名", "学号", "语文成绩", "语文成绩排名"); for (int i = 0; i < ps->size; i++) { printf("%-20s %-20s %-20.2f %-20d\n", ps->stu[i].name, ps->stu[i].id, ps->stu[i].ChiScore, i + 1); } } void DisPlayByMatScore(SeqList* ps) { printf("%-20s %-20s %-20s %-20s\n", "姓名", "学号", "数学成绩", "数学成绩排名"); for (int i = 0; i < ps->size; i++) { printf("%-20s %-20s %-20.2f %-20d\n", ps->stu[i].name, ps->stu[i].id, ps->stu[i].MatScore, i + 1); } } void DisPlayByEngScore(SeqList* ps) { printf("%-20s %-20s %-20s %-20s\n", "姓名", "学号", "英语成绩", "英语成绩排名"); for (int i = 0; i < ps->size; i++) { printf("%-20s %-20s %-20.2f %-20d\n", ps->stu[i].name, ps->stu[i].id, ps->stu[i].EngScore, i + 1); } } void SearByCourse(SeqList* ps) { if (ps->size == 0) { printf("当前学生总数为0,无法修改.\n"); return; } meau3(); int choice2 = 0; rechoice2: printf("请根据您要查询课程的名称,选择相应的编号:>"); scanf("%d", &choice2); float sum = 0.00; int count1 = 0, count2 = 0; printf("\t\t***********查询课程结果***********\n\n"); if (choice2 == 1) { for (int i = 0; i < ps->size; i++) { sum += ps->stu[i].ChiScore; if (ps->stu[i].ChiScore < 60) { count1++; } else if (ps->stu[i].ChiScore < 90) { count2++; } } BubbleSort(ps->stu, ps->size, sizeof(Student), cmp_struct_by_ChiScore); DisPlayByChiScore(ps); } else if (choice2 == 2) { for (int i = 0; i < ps->size; i++) { sum += ps->stu[i].MatScore; if (ps->stu[i].MatScore < 60) { count1++; } else if (ps->stu[i].MatScore < 90) { count2++; } } BubbleSort(ps->stu, ps->size, sizeof(Student), cmp_struct_by_MatScore); DisPlayByMatScore(ps); } else if (choice2 == 3) { for (int i = 0; i < ps->size; i++) { sum += ps->stu[i].EngScore; if (ps->stu[i].EngScore < 60) { count1++; } else if (ps->stu[i].EngScore < 90) { count2++; } } BubbleSort(ps->stu, ps->size, sizeof(Student), cmp_struct_by_EngScore); DisPlayByEngScore(ps); } else { printf("选择错误,请重新选择(提示:请在1-3中选择).\n"); goto rechoice2; } printf("\n\n% -20s % -20s % -20s % -20s % -20s\n", "不及格人数(0-60)", "及格人数(60-100)", "良好人数(60-90)", "优秀人数(90-100)","平均分"); printf("%-20d %-20d %-20d %-20d %-20.2f\n", count1, ps->size - count1, count2, ps->size - count1 - count2, sum / ps->size); } //case 4:查询指定学生 void SearByStudent(SeqList* ps) { if (ps->size == 0) { printf("当前学生总数为0,无法查询.\n"); return; } meau2(); int choice3 = 0; rechoice3: printf("请根据您要按何种方式查找学生,输入相应的编号:>"); scanf("%d", &choice3); int pos = 0; if (choice3 == 1) { char name[20] = { 0 }; printf("请输入您要查询学生的学生姓名:>"); scanf("%s", name); pos = FindByName(ps, name); } else if (choice3 == 2) { char id[20] = { 0 }; printf("请输入您要查询学生的学生学号:>"); scanf("%s", id); pos = FindById(ps, id); } else { printf("选择错误,请重新选择(提示:请在1-2中选择).\n"); goto rechoice3; } if (pos == -1) { printf("您现在要查询的学生不存在当前学生信息管理系统中,请重新选择.\n"); goto rechoice3; } else { printf("\t\t***********查询学生结果***********\n"); printf("%-20s %-20s %-20s %-20s %-20s %-20s %-20s\n","姓名","学号", "语文成绩", "数学成绩", "英语成绩", "总成绩", "总成绩排名"); printf("%-20s %-20s %-20.2f %-20.2f %-20.2f %-20.2f %-20d\n", ps->stu[pos].name, ps->stu[pos].id, \ ps->stu[pos].ChiScore, ps->stu[pos].MatScore, ps->stu[pos].EngScore, ps->stu[pos].SumScore, pos + 1); } } //case 5: 修改学生成绩 -菜单函数和修改函数 -先找到这个学生,再进行修改 void ModSeqList(SeqList* ps) { if (ps->size == 0) { printf("当前学生总数为0,无法修改.\n"); return; } meau2(); int choice4 = 0; rechoice4: printf("请根据您要按何种方式查找到要修改的学生,输入相应的编号:>"); scanf("%d", &choice4); int pos = 0; if (choice4 == 1) { char name[20] = { 0 }; printf("请输入您要修改的学生信息的学生姓名:>"); scanf("%s", name); pos = FindByName(ps, name); } else if (choice4 == 2) { char id[20] = { 0 }; printf("请输入您要修改的学生信息的学生学号:>"); scanf("%s", id); pos = FindById(ps, id); } else { printf("选择错误(提示:请在1-2中选择).\n"); goto rechoice4; } if (pos == -1) { printf("您现在要查询的学生不存在当前学生信息管理系统中,请重新选择.\n"); goto rechoice4; } else { meau3(); int input = 0; again: printf("请根据您要修改的课程成绩的课程名称,选择相应的编号:>"); scanf("%d", &input); printf("请输入修改后的值:>"); if (input == 1) { scanf("%f", &(ps->stu[pos].ChiScore)); } else if (input == 2) { scanf("%f", &(ps->stu[pos].EngScore)); } else if (input == 3) { scanf("%f", &(ps->stu[pos].EngScore)); } else { printf("选择错误,请重新选择 (提示:请在1-3中选择):>"); goto again; } printf("修改成功.\n"); } } //case 6: 按照学号排序 -排升序 void Swap2(Student* s1, Student* s2) { Student temp = *s1; *s1 = *s2; *s2 = temp; } void QsortById(SeqList* ps, int begin, int end) { if (begin >= end) { return; } int keyi = begin; int left = begin, right = end; while (left < right) { while (left < right && strcmp(ps->stu[right].id, ps->stu[keyi].id)>0) { right--; } while (left < right && strcmp(ps->stu[left].id, ps->stu[keyi].id) <= 0) { left++; } Swap2(&(ps->stu[left]), &(ps->stu[right])); } int meeti = left; Swap2(&(ps->stu[meeti]), &(ps->stu[keyi])); QsortById(ps, begin, meeti - 1); QsortById(ps, meeti + 1, end); } //case 7: 按照总成绩排序-排降序 void ShellSortBySumScore(SeqList* ps) { int gap = ps->size; while (gap > 1) { gap = (gap / 3 + 1); for (int i = 0; i < ps->size - gap; i++) { int end = i; Student temp = ps->stu[end + gap]; while (end >= 0) { if (temp.SumScore > ps->stu[end].SumScore) { ps->stu[end + gap] = ps->stu[end]; end--; } else { break; } } ps->stu[end + gap] = temp; } } } //case 9: 打印学生信息 void PrintSeqList(SeqList* ps) { if (ps->size == 0) { printf("当前学生总数为0,无法打印.\n"); return; } printf("%-20s %-20s %-20s %-20s %-20s %-20s %-20s\n", "姓名", "学号", "语文成绩", "数学成绩", "英语成绩", "总成绩", "排名"); for (int i = 0; i < ps->size; i++) { printf("%-20s %-20s %-20.2f %-20.2f %-20.2f %-20.2f %-20d\n", ps->stu[i].name, ps->stu[i].id, \ ps->stu[i].ChiScore, ps->stu[i].MatScore, ps->stu[i].EngScore, ps->stu[i].SumScore, i+1); } } int main() { SeqList ST; InitSeqList(&ST); int input = 0; do { meau1(); printf("请输入您的选择(提示:只能在0-9之间做选择):>"); scanf("%d", &input); switch (input) { case 0: printf("\t******感谢您的使用,即将退出程序******\n"); SaveSeqList(&ST); break; case 1: printf("\t******录入学生信息******\n"); int nums = 0; printf("请输入您要录入的学生个数:>"); scanf("%d", &nums); Student temp = { 0 }; for (int i = 1; i <= nums; i++) { InitStudent(&temp, i); AddSeqList(&ST, temp); } printf("录入成功.\n"); break; case 2: printf("\t******删除学生信息******\n"); DelSeqList(&ST); break; case 3: printf("\t******查询指定课程******\n"); SearByCourse(&ST); break; case 4: printf("\t******查询指定学生******\n"); SearByStudent(&ST); break; case 5: printf("\t******修改学生信息******\n"); ModSeqList(&ST); break; case 6: printf("\t******按照学号排序 (由小到大)******\n"); QsortById(&ST, 0, ST.size); PrintSeqList(&ST); break; case 7: printf("\t******按照总分排序 (由高到低)******\n"); ShellSortBySumScore(&ST); PrintSeqList(&ST); break; case 8: printf("\t******统计学生总数******\n"); printf("当前学生总数:%d\n", ST.size); break; case 9: printf("\t******打印学生信息******\n"); PrintSeqList(&ST); break; default: printf("选择错误,请重新选择(提示:请在0-9中选择):>"); break; } } while (input); }