求助，为什么会意外关闭

[chl27]

	FILE *f;
	int i=0;
    char str[20];
	if((f=fopen("name.txt","r"))==NULL)
	{
		printf ("文件打开失败！\n");
		exit(0);
	}
while(!feof(f))
{
	fscanf(f,"%s",&str);
    G->school[i].name= new  char[strlen(str)+2]; 
    strcpy(G->school[i].name, str);
//	G->edges[i][j]=G->edges[j][i]=k;     
	i++;
}
  printf("%s",G->school[1].name);

	if(fclose(f))
	{
		printf ("文件无法关闭！\n");
		exit(0);
	}

[无趣]

fscanf(f,"%s",&str);
改成
fscanf(f,"%s",str);或者
fscanf(f,"%s",&str[0]);试试