这里的文件名是demo.txt。C 程序和demo.txt文件在同一个目录下。所以输出的结果是file exists。 如果C 程序位置和文件位置不同,我们必须指定文件的完整路径。 我们可以创建一个用户自定义函数,检查文件是否存在。下面是带有用户自定义函数的程序。 #include<stdio.h>intcheckIfFileExists(constchar*filename);intmain...
#include <Shlwapi.h> //Windows API PathFileExists #pragma comment(lib, "shlwapi.lib") int main(void) { if(PathFileExists("setting.ini")){ printf("load custom setting...\n"); }else{ printf("setting file missing,load default..\n"); } return 0; } 1. 2. 3. 4. 5. 6. 7. 8...
Is this a good way to check wheter a file already exists? [snip] Testing whether a file exists often (not always, but often) means you're asking the wrong question. Why do you want to know whether the file exists? If it's so you can decide whether to attempt some operation (e....
Minimum supported server: Windows 2000 Server [desktop apps only] DLL: Shlwapi.dll (version 4.71 or later)*/#include<Windows.h>//Windows API FindFirstFile#include <Shlwapi.h>//Windows API PathFileExists#pragmacomment(lib, "shlwapi.lib")intmain(void) {if(PathFileExists("setting.ini")){ prin...
Using the fopen() Function to Check if a File Exists in C Using the stat() Function to Check if a File Exists in C Using the access() Function to Check if a File Exists in C Conclusion In the realm of C programming, the ability to check the existence of a file is a ...
</returns>public Boolean GO_FileIsUsed(String fileFullName){ Boolean result = false;//判断文件是否存在，如果不存在，直接返回 falseif (!System.IO.File.Exists(fileFullName)) { result = false; }else {//看看文件是否能用程序打开。 System.IO.FileStream fileStream = null;try...
/* Check for exist */ if( (_access( "C:windows", 0 )) != -1 ) { printf( "windows exists " ); } } 其实判断文件存在fopen就行了。 2. linux下或者gcc下 #include <stdio.h> #include <stdlib.h> #include <dirent.h> #include <unistd.h> ...
if(access(file_name, F_OK ) != -1) {//file exists}else{//file doesn't exist} You can also useR_OK,W_OK, andX_OKin place ofF_OKto check for read permission, write permission, and execute permission (respectively) rather than existence, and you can OR any of them together (i.e...
<stdlib.h>void main( void ) { /* Check for existence */ if( (_access( "ACCESS.C", 0 )) != -1 ) { printf( "File ACCESS.C exists " ); /* Check for write permission */ if( (_access( "ACCESS.C", 2 )) != -1 ) printf( "File ACCESS.C has write permission " ); } ...
include <io.h include <stdio.h include <stdlib.h void main( void ){/* Check for existence */ if( (_access( "ACCESS.C", 0 )) != -1 ){printf( "File ACCESS.C exists " );/* Check for write permission */ if( (_access( "ACCESS.C", 2 )) != -1 )