What is the script for entering a blank line in C programming?

Question

What is the code for when someone enters a blank line or just presses enter on a blank line it indicates that the user is finish with entering variables or characters?

Answer 1

string line;
getline(cin,line);

Answer 2

In C you can use a escape character of \n for a new line, puts() also adds a new line so for a blank line you could:

printf("\n");
puts("");

For a blank line.