if((fp=fopen("date.txt","w"))==NULL) { printf("File open err
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if((fp=fopen("date.txt","w"))==NULL) { printf("File open error!\n"); exit(0);能不能解释下什么意思,
![if((fp=fopen(](/uploads/image/z/455802-42-2.jpg?t=if%28%28fp%3Dfopen%28%22date.txt%22%2C%22w%22%29%29%3D%3DNULL%29+%7B+printf%28%22File+open+err)
if((fp=fopen("date.txt","w"))==NULL) //如果不能打开文件date.txt,则
{
printf("File open error!\n");// 显示“File open error!(文件打开错误)”
exit(0);//并退出程序
}
{
printf("File open error!\n");// 显示“File open error!(文件打开错误)”
exit(0);//并退出程序
}
if((fp=fopen("date.txt","w"))==NULL) { printf("File open err
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代码if((fp=fopen(filename,"r"))==NULL) { fprintf(stderr,"Error
fp=fopen(p,
fp=fopen("DATA_KEHU",