Home » C++ programming language

C++ 'or' Keyword with Examples

C++ | 'or' keyword: Here, we are going to learn about the 'or' keyword which is an alternative to Logical OR operator.
Submitted by IncludeHelp, on May 16, 2020

C++ 'or' Keyword

"or" is an inbuilt keyword that has been around since at least C++98. It is an alternative to || (Logical OR) operator and it mostly uses with the conditions.

The or keyword returns 1 if the result of at least one operand is 1, and it returns 0 if all operands result is 0.

Syntax

operand_1 or operand_2;

Here, operand_1 and operand_2 are the operands.

Sample Input and Output

Input:
a = 10;
b = 20;
    
result = (a==10 or b==30);

Output:
result = 1

C++ example to demonstrate the use of "or" keyword

// C++ example to demonstrate the use of 
// 'or' operator.

#include <iostream>
using namespace std;

int main()
{
    int num = 20;

    if (num >= 10 or num <= 50)
        cout << "true\n";
    else
        cout << "false\n";

    if (num >= 20 or num <= 50)
        cout << "true\n";
    else
        cout << "false\n";

    if (num > 50 or num <= 100)
        cout << "true\n";
    else
        cout << "false\n";

    return 0;
}

Output

true
true
true