Two ways to Read and Write Files

標題：C/C++兩種讀取文字檔的方法
VC++ (main.cpp)：

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#include "stdafx.h" #include <iostream> #include <fstream> #include <string> //#include <iomanip> //setprecision(4) "3.1415" //setfill('Q') "QQ123" //setw(5) " 123" using namespace std; int _tmain(int argc, _TCHAR* argv[]) { int i = 0, j = 0; const char *filePath = "pi.xls"; remove(filePath); //Delete File //VC++ ----------------------------------------------------- //Write File ofstream outputFile(filePath, fstream::app); //fstream::out fstream::app if (outputFile.is_open()) //Check File { for(j=1;j<10;j++) { for(i=1;i<10;i++) { outputFile << i << "*" << j << "=" << i*j << "\t"; } outputFile << endl; } outputFile.close(); } //Read File string lines = ""; ifstream inputFile(filePath); if (inputFile.is_open()) //Check File { while(inputFile.good()) { getline(inputFile, lines); cout << lines << endl; } inputFile.close(); } //Standard C ----------------------------------------------------- //Write File FILE *writeFile = fopen(filePath, "a"); if (writeFile) { //Check File for(j=1;j<10;j++) { for(i=1;i<10;i++) { fprintf(writeFile, "%d*%d=%d\t", i, j, i*j); } fprintf(writeFile, "\n"); } fclose(writeFile); } //Read File char line[100] = ""; // Light!! FILE *readFile = fopen(filePath, "r"); if (readFile) { //Check File while(fgets(line, sizeof(line), readFile)) { printf("%s", line); } fclose(readFile); } return 0; }

說明：
使用fstream的方法讀寫檔案，以及使用C的fopen讀寫檔案的方法。