How to use getline() in C++ when there are blank lines in input?

In C++, we use the getline() function to read lines from stream. It takes input until the enter button is pressed, or user given delimiter is given. Here we will see how to take the new line character as input using the getline() function. Let us see the following implementation to get the idea.

Example

 Live Demo

#include<iostream>
using namespace std;
int main() {
   string str;
   int term = 4;
   while (term--) {
      getline(cin, str);
      while (str.length()==0 )
      getline(cin, str);
      cout << str << " : New Line" << endl;
   }
}

Output

Hello
Hello : New Line
World
World : New Line
This is
This is : New Line
C++ Language
C++ Language : New Line

Arnab Chakraborty

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Updated on: 17-Dec-2019

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