Do white-spaces in a string change how a program interprets it?

Question

I am trying to learn C++. I created a program that inputs a name and then says "Hello, <name>!". But when I enter "Aditya Singh" as the name, it outputs "Hello, Aditya!", which is not what I expected.

My code:

#include <iostream>
#include <string>

using namespace std;

// I created the class because I was learning C++ Classes
class MyClass {
public: 
    void setName(string inp) {
        name = inp;
    }
    string getName() {
        return name;
    }

private:
    string name;
};

int main() {
    // Input Name

    string inpName;
    cout << "Please enter your name\n";
    cin >> inpName;

    // Say hello

    MyClass name;
    name.setName(inpName);
    cout << "Hello, " << name.getName() << "!" << endl;
}

Does this happen because of a white space in the string? How can I output a string with a white space then?

Possible duplicate of [std::cin input with spaces?](https://stackoverflow.com/questions/5838711/stdcin-input-with-spaces) — Stack Danny, Apr 12 '19 at 09:24
`cin >> inpName` catchs word, *ie* something delimited by *spaces*... Thus "Aditya Singh" is 2 words... Use `getline(cin...)` to catch the whole input. — Jean-Baptiste Yunès, Apr 12 '19 at 09:24
you are outputting the complete string the "problem" is the input — 463035818_is_not_an_ai, Apr 12 '19 at 09:24

score 1 · Accepted Answer · answered Apr 12 '19 at 09:24

This is because cin >> inpName reads a word at a time, so yes, it is because of the whitespace within the input. It seems what you need is a mechanism to read until the newline character \n. This functionality is already there, just replace cin >> inpName by

std::getline(cin, inpName); // Store everything until \n in inpName

Do white-spaces in a string change how a program interprets it?

1 Answers1