MFC处理文件常用操作

MFC判断文件或文件夹是否存在函数

CString Path;
BOOL rec = PathFileExists(Path);
if(rec)
{
    
    
    //存在
}else{
    
    
    // 不存在
}

创建文件

CString filename=_T("D:/test.txt");
CFile file(filename,CFile::modeCreate);
file.Close();

写文件

    CString filename =_T("D:/test.txt");
    CFile file(filename,CFile::modeWrite);
    char str[]="XXXXXX";
    file.Write(str,sizeof(str));
    file.Close();

读文件

	CString filename=_T("D:/test.txt");
    CFile file(filename,CFile::modeRead);
    char *str=new char[file.GetLength()];
    file.Read(str,file.GetLength*sizeof(char));
    file.Close();

c语言新建文件(txt)

// path = "D:\\log.txt"
FILE * r=fopen(path,"w");
fclose(r);

c语言读取文件

char str[256] = {
    
    0};
FILE * r=fopen(path,"r");
fscanf(r,"%s",str);
fclose(r);

c语言写入文件

char str[256] = {
    
    0};
FILE * r=fopen(path,"w");// a+  在末尾追加内容
fprintf(r,"%s","D:\\");
fclose(r);

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转载自blog.csdn.net/qq_44391957/article/details/124579602