Question

C++，vector中每个元素都是对象，如何把这个vector存入文件？

Answer 1

#include <iostream> #include <fstream> #include <vector> #include <string> #include <algorithm> int main() { std::vector<std::string> text; std::string line; std::string word; std::string filepath="c:\\cc.txt";//要读取的文件 std::ifstream fin(filepath.c_str()); while(!fin.eof()) { std::getline(fin,line);//读行 //std::cout<<line<<std::endl; for (int i=0;i<line.size();++i) { if(line[i]>='a' && line[i]<='z')//转大小 line[i]-=32; if(line[i]==' ' || line[i]=='\t') { if(!word.empty()) { text.push_back(word); word.clear(); } } else word+=line[i]; } text.push_back(word); word.clear(); } //输出 for (int i=0; i<text.size();++i) { std::cout<<text[i]<<" "; if(i%7==0 && i!=0) std::cout<<"\n"; } }