1. Fix the memory leak in the c code

#include stdio.h

#include stdlib.h

#include string.h #define SIZE 16 int main() { char *data1, *data2; int i; do { data1 = malloc (SIZE); printf ("input your username: "); scanf ("%s", data1); if (!strcmp (data1, "quit")) break; data2 = malloc (SIZE); for (i=0; i data2[i] = data1[i]; free (data1); printf ("data2 :%s: ", data2); } while (1); return 0; }

2. how many times is the write () system call invoked