What is -> in C++?

In C++, != is the inequality operator used to compare two values or expressions. It checks whether the values on either side of the operator are not equal. If the values are not equal, the expression evaluates to true; otherwise, it evaluates to false. This operator can be used with various data types, including integers, floating-point numbers, characters, and pointers.

Example Usage:

Here’s a simple example to illustrate the use of the != operator:

#include <iostream>
using namespace std;

int main() {
    int a = 10;
    int b = 20;

    if (a != b) {
        cout << "a is not equal to b." << endl;  // This will be printed
    } else {
        cout << "a is equal to b." << endl;
    }

    return 0;
}

Key Points:

• Returns a Boolean Value: The != operator always returns a boolean value (true or false).
• Type Compatibility: The types of the operands being compared should be compatible. If they are not, the compiler may raise an error or perform type conversion.
• Common Usage: The inequality operator is often used in conditional statements, loops, and any scenario where comparisons are necessary.

Summary:

The != operator is an essential part of C++ that allows for comparisons, helping developers control program flow based on conditions.

For more detailed information, you can refer to the following sources:

• GeeksforGeeks: C++ Operators
• cplusplus.com: C++ Operator Overloading