C/C++使用ifstream从文件中一行一行读取数据
一、概述
案例:使用ifstream从文件中一行一行读取数据,并对数据进行分割
#include <fstream> #include <string> #include <stdio.h> #include <stdlib.h>
二、代码示例
string filename = string("/Users/yangwei/Documents/tony/opencv/orl_faces/targetData.txt"); ifstream file(filename,ifstream::in); string line,path,classLabel;//行、路径、标签 vector<Mat> images; vector<int> labels; while(getline(file,line)){ stringstream liness(line); getline(liness,path,' '); getline(liness,classLabel); // if (!path.empty() && !labels.empty()) { cout << "path :"<< classLabel.c_str()<<endl;; images.push_back(imread(path, 0)); labels.push_back(atoi(classLabel.c_str())); // } } file.close();