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📜  int main() { int sum =0;文件 * ptr; ptr = fopen("d:\\students.",""); if (ptr ==NULL){ ("文件不存在!!");退出(0); } - C 编程语言代码示例

📅  最后修改于: 2022-03-11 15:04:44.004000             🧑  作者: Mango

代码示例1
int main() {

int sum =0;
FILE * ptr;
ptr = fopen("d:\\students.________","___________");

if (ptr ==NULL){
 _______________("file does not exist!!");
 exit(0);
}