Breaking out of a loop from within a function called in that loop

Question

I\'m currently trying to figure out a way to break out of a for loop from within a function called in that loop. I\'m aware of the possibility to just have the

Answer 1

Just set a global variable and check that on the loop:

#include 

int leave = 0;

void foo (int a) {
    printf("a: %d", a);
    leave = 1;
}

int main(void) {
    for (int i = 0; i <= 100; i++) {
        foo(i);
        if (leave)
          break;
    }
    return 0;
}