#include <stdlib.h>
// Reallocation
void f() {
char* buf = (char*) malloc(20);
buf[6] = 'x';
buf = (char*) realloc(buf, 9);
int i = 0;
while (i < 12) {
buf[i] = 's';
i++;
}
int main() {
f();
return 0;