C语言及程序设计初步例程-38 用break和continue改变流程

贺老师教学链接  C语言及程序设计初步 本课讲解

break语句

#include <stdio.h>
int main()
{
    int s=0, k=1;
    while(1)
    {
        s+=k ;
        if (k>=100)
            break ;
        k=k+1;
    }
    printf("s = %d\n", s);
    return 0;
}
continue语句
#include <stdio.h>
int main()
{
    int i;
    for (i=1; i<=10 ; i++)
    {
        if (i%2==0)
            continue;
        printf("%d\n", i);
    }
    return 0;
}

#include <stdio.h>
int main()
{
    char cChioce;    
    do
    {
        printf("*  1. 吃饭\n");
        printf("*  2. 睡觉\n");
        printf("*  3. 打豆豆\n");
        printf("*  0. 退出\n");
        printf("*  请选择（0-3）：");
        scanf("%c", &cChioce);
        //选择后的处理
        if (cChioce=='1')
            printf("我吃吃吃...\n");
        else if (cChioce=='2')
            printf("我睡觉觉...\n");
        else if (cChioce=='3')
            printf("我打打打...\n");
        else if (cChioce=='0')
            break;
        else
        {
            printf("\007选择错误！\n");
            continue;
        }
        printf("恭喜你完成了一项工作！\n");
    }
    while(1);
    return 0;
}

#include <stdio.h>
int main()
{
    char cChioce;
    void eat();
    void sleep();
    void hitdoudou();
    do
    {
        printf("*  1. 吃饭\n");
        printf("*  2. 睡觉\n");
        printf("*  3. 打豆豆\n");
        printf("*  0. 退出\n");
        printf("*  请选择（0-3）：");
        scanf("%c", &cChioce);
        if (cChioce=='1')
            eat();
        else if (cChioce=='2')
            sleep();
        else if (cChioce=='3')
            hitdoudou();
        else if (cChioce=='0')
            break;
        else
        {
            printf("\007选择错误！\n");
            continue;
        }
        printf("恭喜你完成了一项工作！\n");
    }
    while(1);
    return 0;
}


void eat()
{
    printf("我吃吃吃... ...\n");
}


void sleep()
{
    printf("我睡觉觉... ...\n");
}


void hitdoudou()
{
    printf("我打打打... ...\n");
}