/**
 * This exercise traces through a program follows
 * where "control" is passed from function to function.
 *
 * What does this program print to the screen?
 */

void main(){
    f1();
    f3();
}

void f1(){
    printf("f1!\n");
    f2();
}

void f2(){
    printf("f2!\n");
}

void f3(){
    printf("f3!\n");
    f5();
}

void f4(){
    printf("f4!\n");
}

void f5(){
    printf("f5!\n");
    f2();
}