输入输出,是每一个程序猿的基本功,尤其是对文本的输入和输出。
近期,自己在这方面做了一些总结,不是非常全面,希望在以后学习和工作的过程中慢慢补充,积累点点滴滴。
P.S. 今天天气不错。雾霾散了。天空晴朗。惠风和畅,心情不错。
一、写操作
// set.cpp : 定义控制台应用程序的入口点。 // #include "stdafx.h" #include "iostream" #include "string" #include "fstream" using namespace std; int _tmain(int argc, _TCHAR* argv[]) { const string data = (string)"hello"+"+"+"world"; ofstream out(data,ofstream::app); out << 3 <<endl; out.close(); return 0; }
二、读操作
// set.cpp : 定义控制台应用程序的入口点。// #include "stdafx.h" #include "iostream" #include "string" #include "fstream" #include "vector" #include "sstream" using namespace std; struct personalinfo{ string name; vector<string> phones; }; int _tmain(int argc, _TCHAR* argv[]) { const string data = "C:\Users\helei\Documents\Visual Studio 2010\Projects\set\Release\hello+world"; ifstream out(data,ofstream::app); string line,word; vector<personalinfo> people; while (getline(out,line)){ personalinfo info; istringstream record(line); record >> info.name; while (record >> word) info.phones.push_back(word); people.push_back(info); } cout << people[0].name <<" "<< people[0].phones[0] <<" "<< people[0].phones[1] << endl; cout << people[1].name <<" "<< people[1].phones[0] << endl; cout << people[2].name <<" "<< people[2].phones[0] <<" "<< people[2].phones[1] <<" "<< people[2].phones[2] << endl; out.close(); return 0; }