ofstream是从内存到硬盘,ifstream是从硬盘到内存,其实所谓的流缓冲就是内存空间; //ofstream & ifstream inherit from istream class and ostream,so they support all the method that iostream class has,like getline(istream,string)->getline(ifstream),cin>> -> fin>>,and so…
以后整理规范 import os import codecs filenames=os.listdir(os.getcwd()) out=file("name.txt","w") for filename in filenames: out.write(filename.decode("gb2312").encode("utf-8")) out.close() 将执行文件的当前目录及文件名写入到name.txt文件中,…
ofstream(输出流)是从内存到硬盘,ifstream(输入流)是从硬盘到内存. //#include<iostream> #include<fstream> using namespace std; int main() { ifstream in; ofstream out; in.open("a.txt"); out.open("b.txt"); int x, y, z; in >> x >> y >&…
1.向文件写数据 头文件#include <ofstream> ①Create an instance of ofstream(创建ofstream实例) ②Open the file with open() or ofstreamconstructor (用open()或者构造函数打开文件) ③Writedata to the file with "<<" (用流插入运算符写数据) ④Close the file (explicitly close()) (显…