C++ ------------------------- 文件的复制

来源：互联网发布：个人域名的行业应用编辑：程序博客网时间：2024/05/18 02:31

#include <fstream>using namespace std;int copyFile(char* sourceFile,char* newFile){    ifstream in;    ofstream out;        in.open(sourceFile);        if (in.fail()) {        // 打开文件失败        cout << "打开文件失败" << endl;        in.close();        out.close();        return 0;    }    out.open(newFile);    if (out.fail()) {        cout << "打开文件失败" << endl;        in.close();        out.close();        return 0;    }        //开始复制    out << in.rdbuf();    out.close();    in.close();    return 1;}

int main(){    char sourceFile[256];    char newFile[256];    cout << "请输入源文件:" << endl;    cin >> sourceFile;    cout << "请输入目标文件:" << endl;    cin >> newFile;        if (copyFile(sourceFile, newFile)) {        cout << "复制成功......." << endl;    }else    {        cout << "失败了, - -!" << endl;    }        return 0;}

如果想一行一行的进行处理:

#include <iostream>#include <fstream>#include <string>using namespace std;int main(int argc, const char * argv[]){    ifstream in("/Users/user/Downloads/Cindy/cindy.obj");    string line;    int index = 1;    if(in){        // have no '\n',        while (getline(in,line)) {            //store the lines to a vector or list, use method insert            printf("%d : %s \n",index++,line.c_str());        }                in.close();    }    return 0;}