用C++的方式读取并显示文件的每一行

 

#include <stdio.h>#include <fstream>using namespace std;bool FileGetLine(const char* szFileName){bool fRet = false;int iLineIndex = 0;const int MAX_LINE_LEN = 512;static char szLineData[MAX_LINE_LEN];ifstream infile;infile.open(szFileName);if ( !infile.fail() ){while (true){infile.getline(szLineData, MAX_LINE_LEN);if ( infile.eof() ){fRet = true;break;}else{printf("%03d:[%s]\n", ++iLineIndex, szLineData);}}infile.close();}return fRet;}int main(void){if ( true == FileGetLine("demo.txt") ){printf("ok\n");}else{printf("on!\n");}getchar();return 0;}