find line in file c++ code example

Example 1: c++ read file line by line

#include <iostream>
#include <ifstream>
#include <string>

using namespace std;

ifstream file("file.txt");
if (file.is_open())
{
	string line;
	while (getline(file, line))
    {
    	// note that the newline character is not included
        // in the getline() function
    	cout << line << endl;
    }
}

Example 2: get line C++

// extract to string
#include <iostream>
#include <string>

int main ()
{
  std::string name;

  std::cout << "Please, enter your full name: ";
  std::getline (std::cin,name);
  std::cout << "Hello, " << name << "!\n";

  return 0;
}