How to Use the Not-Equal (!=) Operator in C++?
The following examples show how can we use the not-equal operator in our C++ programs:
Example 1
The below example demonstrates the use of the not-equal operator in conditional statements.
C++
// C++ program to demonstrate the use of the not-equal // operator in conditional statements. #include <iostream> using namespace std; int main() { // creating two integer numbers int num1 = 10; int num2 = 20; // Check if the two numbers are not equal if (num1 != num2) { cout << num1 << " is not equal to " << num2 << endl; } else { cout << num1 << " is equal to " << num2 << endl; } return 0; } |
10 is not equal to 20
Explanation: In above example, we are using Not-Equal Operator (!=) that checks whether the num1 and num2 are equal or not. As 10 and 20 are not equal so the block of code inside if statement is executed and prints ” 10 is not equal to 20 “.
Example 2
The below example demonstrates the use of not-equal operator in loops.
C++
// C++ program to demonstrate the use of not-equal operator // in loops. #include <iostream> using namespace std; #include <iostream> int main() { int arr[] = { 2, 4, 6, 8, 10 }; // Sample array int target = 6; // Number to find bool found = false ; // Flag to indicate if the number is found int i = 0; int n = sizeof (arr) / sizeof ( arr[0]); // Calculate the size of the array // Loop through the array using the not-equal operator while (i != n) { if (arr[i] == target) { found = true ; break ; // Exit the loop if the number is found } i++; } if (found) { cout << "Number " << target << " is present in the array." << endl; } else { cout << "Number " << target << " is not present in the array." << endl; } return 0; } |
The number 6 is not present in the array.
Explanation: In above example, we are checking that a target is present in array or not by using a not equal operator to loop in array until iterator i is not equal to size of array.
How to Use the Not-Equal (!=) Operator in C++?
The not-equal operator is a fundamental comparison operator in C++ represented by “!=”. It is used for making decisions in programming and is hence called a conditional operator. In this article, we will discuss how to use the Not-Equal (!=) operator in C++.
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