我有一个txt文件,其中包含名称,id号,mobilenumber和以逗号分隔的行的位置。
例
罗比,7890,7788992356,123威斯敏斯特
汤姆,金士顿路124号8820,77882345
我的任务是取回
通过姓名查找员工的所有信息。
通过ID查找员工的所有信息。
添加员工信息。
更新员工信息。
到目前为止,我已经阅读了文件并将信息存储在 vector 中。代码如下所示。
对于任务
1)按姓名查找员工的所有信息。我将在 vector 中进行迭代并打印包含名称的信息。我将能够做到这一点
2)simialry在文本文件中,我将查找id并打印有关此信息。
但是我对第3点和第4点一无所知。
我在下面发布我的代码
void filter_text( vector<string> *words, string name)
{
vector<string>::iterator startIt = words->begin();
vector<string>::iterator endIt = words->end();
if( !name.size() )
std::cout << " no word to found for empty string ";
while( startIt != endIt)
{
string::size_type pos = 0;
while( (pos = (*startIt).find_first_of(name, pos) ) != string::npos)
std:cout <<" the name is " << *startIt<< end;
startIt++;
}
}
int main()
{
// to read a text file
std::string file_name;
std::cout << " please enter the file name to parse" ;
std::cin >> file_name;
//open text file for input
ifstream infile(file_name.c_str(), ios::in) ;
if(! infile)
{
std::cerr <<" failed to open file\n";
exit(-1);
}
vector<string> *lines_of_text = new vector<string>;
string textline;
while(getline(infile, textline, '\n'))
{
std::cout <<" line text:" << textline <<std::endl;
lines_of_text->push_back(textline);
}
filter_text( lines_of_text, "tony");
return 0;
}
最佳答案
#include <string>
#include <iostream>
#include <vector>
#include <stdexcept>
#include <fstream>
struct bird {
std::string name;
int weight;
int height;
};
bird& find_bird_by_name(std::vector<bird>& birds, const std::string& name) {
for(unsigned int i=0; i<birds.size(); ++i) {
if (birds[i].name == name)
return birds[i];
}
throw std::runtime_error("BIRD NOT FOUND");
}
bird& find_bird_by_weight(std::vector<bird>& birds, int weight) {
for(unsigned int i=0; i<birds.size(); ++i) {
if (birds[i].weight< weight)
return birds[i];
}
throw std::runtime_error("BIRD NOT FOUND");
}
int main() {
std::ifstream infile("birds.txt");
char comma;
bird newbird;
std::vector<bird> birds;
//load in all the birds
while (infile >> newbird.name >> comma >> newbird.weight >> comma >> newbird.height)
birds.push_back(newbird);
//find bird by name
bird& namebird = find_bird_by_name(birds, "Crow");
std::cout << "found " << namebird.name << '\n';
//find bird by weight
bird& weightbird = find_bird_by_weight(birds, 10);
std::cout << "found " << weightbird.name << '\n';
//add a bird
std::cout << "Bird name: ";
std::cin >> newbird.name;
std::cout << "Bird weight: ";
std::cin >> newbird.weight;
std::cout << "Bird height: ";
std::cin >> newbird.height;
birds.push_back(newbird);
//update a bird
bird& editbird = find_bird_by_name(birds, "Raven");
editbird.weight = 1000000;
return 0;
}
显然不是员工,因为那会使您的家庭作业太容易了。