1 #include <stdio.h> 2 #include <stdlib.h> 3 4 5 6 void *mallocit(int n) { 7 return malloc(n); 8 } 9 char* process(char *p) { 10 int n; 11 if (p) free(p); 12 scanf("%d", &n); if (n==0) return NULL; 13 p = (char *)mallocit(n); 14 return p; 15 } 16 int main() { 17 char *p = NULL; 18 int n; 19 while(1) { 20 p = process(p); 21 if (p==NULL) { printf("Fail to malloc\n"); break; } 22 } 23 return 0; 24 } 25