test put switch case in do...while loop

result

test case 1:
case on the top
case in do while
case in 2 loop for
case in 2 loop for
case in default
test case 2:
case in do while
case in 2 loop for
case in 2 loop for
case in default
test case 3:
case in 2 loop for
case in 2 loop for
case in default

test_case_in_loop.c

#include<stdio.h>


void p(const char *input)
{
    printf("case %s\n", input);
}
void test_case_in_loop(int n_switch)
{
    int i = 0;
    switch (n_switch) {
        case 1:
        do {
            p("on the top");
        case 2:
            p("in do while");
        } while (0);
        for (i = 0; i < 2; i++) {
        case 3:
            p("in 2 loop for");
        }
        default:
            p("in default");
    }
}

int main(void)
{
    printf("%s\n", "test case 1:");
    test_case_in_loop(1);

    printf("%s\n", "test case 2:");
    test_case_in_loop(2);

    printf("%s\n", "test case 3:");
    test_case_in_loop(3);
    return 0;
}