判断文件是否存在

C 语言版

#include <stdio.h>#include <io.h>void main(){if (!access("C:\\KinectData\\reqt.txt", 0))puts(" EXISITS!");elseputs(" DOESN'T EXISIT!");}

C++版

#include <iostream>#include <fstream>using namespace std;#define FILENAME "C:\\KinectData\\st.txt"int main(){fstream _file;_file.open(FILENAME, ios::in);if (!_file){cout << FILENAME << "没有被创建"<<endl;}else{cout << FILENAME << "已经存在" << endl;}return 0;}