C++ Part 30

String | Getline and Cin

string s1, s2;
cin >> s1;
cin >> s2;
If the user types in
I love NavidPlus website.
s1 will receive value "I" and s2 will receive the value "love".
If you want your program to read an entire line of input into a variable of type string , you can use the function getline.
Example:
string line;
cout << "Enter a line of input:\n"; getline(cin, line); cout << line << "END OF OUTPUT\n";

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I/O with string Objects
You can use the insertion operator << with cout to output string objects. You can input a string with the extraction operator >> and cin.

When using >> for input, the code reads in a string delimited with whitespace.
You can use the function getline to input an entire line of text into a string object.
EXAMPLES
string greeting("Hello"), response, nextLine;
cout << greeting; cin >> response;
getline(cin, nextLine);

C++ Part 29

C++ Strings Part II

If you didn't read the first part, you can find it here.
getline: may input spaces, as before.
e.g., getline(cin,s1) would assign “Navid Plus” to s1 in the "Navid Plus" example.
Example :

#include <iostream>// Coded by https://NavidPlus.blogspot.com#include <string> #include<cstdlib> using namespace std; int main ( ) {     string backString;     cout << "What ever your going to write here, I will reverse it. " <<endl;     getline (cin,backString);     int theIndex = backString.length()-1;     while ( theIndex >= 0)     {        cout << backString [theIndex] ;        theIndex --;     }     cout << '\n' ; }