1.编写程序查看系统如何处理整数上溢和浮点数上溢和下溢情况。
#include<stdio.h> int main(void) { int int_a = -1; float float_a = -1.0; for (int i = 1; i <= 128; i++) { int_a *= 2; float_a *= 2; printf("2^%d = %d\t\t\t 2^ %d = %f\n", i, int_a, i, float_a); } getchar(); getchar(); //在VS中让窗口停留 return 0; }
2.提示输入一个ASCII码,然后打印对应的字符。
#include<stdio.h> int main(void) { int ascii_n; char ascii_c; printf("请输入一个ASCII码:"); scanf_s("%d", &ascii_n); ascii_c = ascii_n; printf("%c", ascii_c); getchar(); getchar(); //在VS中让窗口停留 return 0; }
3.发出响铃,然后打印一串文本
#include<stdio.h> int main(void) { printf("\a"); printf("Startled by the sudden sound, Sally shouted,\n"); printf("\"By the Great Pumpkin, what was that! \""); getchar(); getchar(); //在VS中让窗口停留 return 0; }
4.读取一个浮点数,以小数和指数形式打印
#include<stdio.h> int main(void) { float float_n; printf("Enter a floating-point value: "); scanf_s("%f", &float_n); printf("fixed-point notation:%f\n",float_n); //小数点形式 printf("exponential notation:%e\n", float_n); // 指数形式 printf("p notation: %a\n" ,float_n); //十六进制 getchar(); getchar(); //在VS中让窗口停留 return 0; }
5.一年大概有3.156 x 10^7 秒。 输入年龄,转换成对应的秒。
#include<stdio.h> int main(void) { int age; const float secondsOfAYear = 3.156e7; printf("输入年龄: "); scanf_s("%d", &age); printf("相当于 %f 秒\n" ,secondsOfAYear*age); getchar(); getchar(); //在VS中让窗口停留 return 0; }
6. 1个水分子质量为 3 * 10 ^-23 g , 1 夸脱的水是950g.输入夸脱数,转换成水分子数,
#include<stdio.h> int main(void) { float quart; const float water = 3.0e23; const int aquart = 950; printf("输入水的夸脱数: "); scanf_s("%f", &quart); printf("相当于 %f 个水分子\n" ,quart*aquart*water); getchar(); getchar(); //在VS中让窗口停留 return 0; }
7. 1英寸相当于2.54厘米,输入英寸转换厘米。
#include<stdio.h> int main(void) { const float inchToCm = 2.54; float inch; printf("请输入英寸:"); scanf_s("%f", &inch); printf(" %f英寸相当于%f厘米", inch, inch*2.54); getchar(); getchar(); //在VS中让窗口停留 return 0; }
8.单位转换
1品脱 = 2 杯; 1杯 = 8盎司; 1盎司 = 2大汤勺; 1大汤勺 = 3 茶勺
#include<stdio.h> int main(void) { float cup; printf("输入杯数:"); scanf_s("%f", &cup); printf("相当于%f品脱\n%f盎司\n%f大汤勺\n%f茶勺", cup / 2,8*cup,16*cup,48*cup); getchar(); getchar(); //在VS中让窗口停留 return 0; }