C语言和指针-回顾06-switch

#include<stdio.h>

void test_function(int input)
{
    switch(input)
    {
        case 0:
            printf("input is 0
");
        case 1:
            printf("input is 1
");
        case 2:
            printf("input is 2
");
        case 3:
            printf("input is 3
");
        default:
            printf("default
");
        case 4:
            printf("input is 4
");
        case 5:
            printf("input is 5
");
            break;
        case 6:
            printf("input is 6
");
            break;
    }
    printf("----------------------
");
}

int main()
{
    test_function(3);
    test_function(7);
}

Output :

input is 3
default
input is 4
input is 5
----------------------
default
input is 4
input is 5
----------------------