“Know how to solve every problem that has been solved.” “What I cannot create, I do not understand.” — Richard Feynman

Conditional Statement

Programming

Audited·on 2026-05-14·short read

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base
- Hello World
- Variables & Arithmetic
↳you are here

This program demonstrates conditional statements using if-else to check if a number is even or odd.

Implementation

#include <iostream>

int main() {
    int num;
    std::cout << "Enter a number: ";
    std::cin >> num;

    if (num % 2 == 0)
        std::cout << num << " is even." << std::endl;
    else
        std::cout << num << " is odd." << std::endl;

    return 0;
}

Key Concepts

std::cin: Standard input stream for reading user input
>>: Stream extraction operator
if-else: Conditional statement for decision making
%: Modulo operator (returns remainder after division)
==: Equality comparison operator

Example Interaction

Enter a number: 7
7 is odd.