c语言中程序分支结构（switch语句）

1、c语言中switch语句

将程序分为多个分支的时候，可以使用switch语句。

#include <stdio.h>

int main(void)
{
    int i;
    puts("please input an integer.");
    printf("i = "); scanf("%d", &i);
    
    if (i % 3 == 0)
        puts("can be devided by 3");
    else if (i % 3 == 1)
        puts("the reminder is 1");
    else
        puts("the reminder is 2");
    return 0;
}

 

 

 ↓

#include <stdio.h>

int main(void)
{
    int i;
    puts("please input an integer!");
    printf("i = "); scanf("%d", &i);
    
    switch(i % 3)
    {
        case 0: puts("can be devided by 3"); break;
        case 1: puts("the reminder is 1"); break;
        case 2: puts("the reminder is 2"); break;
    }
    return 0;
}