请问这断小程序有错么?

xiaochengwx

#include <stdlib.h>
#include <stdio.h>

int main(void){
  int i;
  char* ch;
  
  ch=(char*)malloc(sizeof(char)*100);
  i++;
  sprintf(ch,"%s","afasdfdf");
  printf("%d %s",i,ch);
  free ch;
  return 0;
}

出错信息为:
inc.c: In function `main':
inc.c:12: parse error before "ch"

默难

第十二行的：
[code:1]
free ch;
[/code:1]
改为：
[code:1]
free(ch);
[/code:1]