Getting Input From Users

Lesson 10
Author : Afrixi
Last Updated : November, 2022

C++ - Programming Language

This course covers the basics of programming in C++.

To get input from users in C++, you can use the std::cin function. Here’s an example:

#include <iostream>

int main() {
    int age;
    std::cout << "Enter your age: ";
    std::cin >> age;
    std::cout << "Your age is: " << age << std::endl;
    return 0;
}

In this code, the std::cin function is used to read in an integer value entered by the user, and store it in the variable age. The std::cout function is used to prompt the user to enter their age, and then to output the age entered by the user.

Note that std::cin can also be used to read in other types of values, such as floating point numbers and strings. For example, to read in a floating point number, you can do:

double height;
std::cout << "Enter your height in meters: ";
std::cin >> height;
std::cout << "Your height is: " << height << " meters" << std::endl;

To read in a string, you can use the std::getline function, like this:

#include <iostream>
#include <string>

int main() {
    std::string name;
    std::cout << "Enter your name: ";
    std::getline(std::cin, name);
    std::cout << "Your name is: " << name << std::endl;
    return 0;
}

In this code, the std::getline function is used to read in a string entered by the user, and store it in the variable name. Note that we need to include the string library to use the std::getline function.

When using std::getline, it’s important to note that it reads in the entire line of input, including any spaces or special characters.

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