C++ if...else

Sure! Here is an explanation of how the if...else statement works in C++:

The if...else statement is a conditional statement in C++ that allows you to execute different blocks of code based on a condition. It consists of the keyword "if", followed by a condition in parentheses, and a block of code to be executed if the condition is true. Optionally, it can be followed by the keyword "else" and another block of code to be executed if the condition is false.

Here is the general syntax of the if...else statement:

if (condition) {
    // code to be executed if the condition is true
} else {
    // code to be executed if the condition is false
}

When the if...else statement is encountered, the condition is evaluated. If the condition is true, the block of code inside the "if" statement is executed. If the condition is false, the block of code inside the "else" statement (if present) is executed.

The condition in the if...else statement can be any expression that evaluates to a boolean value (true or false). For example, you can use comparison operators (such as ==, !=, <, >, <=, >=) to compare variables or values, or logical operators (such as &&, ||, !) to combine multiple conditions.

Here is an example that demonstrates the usage of the if...else statement:

#include <iostream>

int main() {
    int num = 10;

    if (num > 0) {
        std::cout << "The number is positive." << std::endl;
    } else {
        std::cout << "The number is non-positive." << std::endl;
    }

    return 0;
}

In this example, the condition num > 0 is evaluated. If it is true (which it is in this case since num is 10), the statement inside the "if" block is executed and "The number is positive." is printed. If the condition is false, the statement inside the "else" block is executed and "The number is non-positive." is printed.

That's how the if...else statement works in C++. It allows you to execute different blocks of code based on a condition, providing a way to control the flow of your program. Let me know if you have any further questions.