string sourcefilename = "D:\\Logo.jpg"; string destfilename="D:\\Logo1.jpg"; FILE* fp; if ( (fp=fopen(sourcefilename.c_str(), "rb" ))==NULL ) { return; } fseek(fp, 0, SEEK_END); int length=ftell(fp); rewind(fp); char* ImgBuffer=(char*)malloc( length* sizeof(char) ); fread(ImgBuffer, length, 1, fp); fclose(fp); if ( (fp=fopen(destfilename.c_str(), "wb"))==NULL) { return; } fwrite(ImgBuffer,sizeof(char) *iSize, 1, fp); fclose(fp); free(ImgBuffer);
2、STL方式
#include<fstream> #include <iostream> string sourcefilename = "D:\\Logo.jpg"; string destfilename="D:\\Logo1.jpg"; std::ifstream fin(sourcefilename.c_str(), std::ios::binary); fin.seekg(0, ios::end); int iSize = fin.tellg(); char* ImgBuffer = new char[ sizeof(char) *iSize]; fin.seekg(0, ios::beg); fin.read(ImgBuffer, sizeof(char) * iSize); fin.close(); std::ofstream outFile(destfilename.c_str(), ios::out | ios::binary); outFile.write(ImgBuffer,sizeof(char) * iSize); outFile.close();