int main() { int x = 10; double_in(&x); printf("x now points to %i.\n", x); }
int main(){ int x= 10; double_in(&x); printf("x is now %i.\n", x); }
int main() { int x = 10; double_in(&x); printf("x now points to %i.\n", x); }
int main(){ int x= 10; double_in(&x); printf("x is now %i.\n", x); }