loops.c

#include <stdio.h>

int main()
{
#define REPEAT(count, action) REPEAT_HELPER(count, action)
#define REPEAT_HELPER(count, action) \
    REPEAT_##count(action)
#define REPEAT_1(action) action(1)
#define REPEAT_2(action) action(2) REPEAT_1(action)
#define REPEAT_3(action) action(3) REPEAT_2(action)

#define PRINT_NUMBER(x) printf("%d\n", x);
REPEAT(3, PRINT_NUMBER)
    return 0;
}