C# If Statement

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What is the if Statement?

In C#, the ‘if‘ statement is used to evaluate a boolean expression – an expression that results in either ‘true’ or ‘false’. Based on the result of this evaluation, the ‘if’ statement will execute a block of code. If the condition is ‘true’, the code inside the if block runs; if it’s ‘false’, the code is skipped.

Basic Syntax

Here’s the basic syntax of the ‘if’ statement:

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

Example:

int number = 11;
if (number > 7) {
    Console.WriteLine("The number is greater than 7.");
}

You can also use the following operators in the if statement: <, >, ==, contains. Let’s see some of these examples:

int num1 = 3;
int num2 = 10;

if(num1 < num2){
  Console.WriteLine(num1 + " is less than " + num2);
}
// output: 3 is less than 10


int num1 = 10;
int num2 = 10;

if(num1 == num2){
  Console.WriteLine(num1 + " and " + num2 + " are the same value.");
}
// output: 10 and 10 are the same value.


String str = "Hello World!";

if(str.contains("Hello")){
  Console.WriteLine(str);
}
// output: Hello World!

The ‘if’ statement is very powerful and versatile tool in C# programming that allows you to control the flow of your program based on dynamic conditions. By understanding and utilizing if, if-else, and if-else if-else statements effectively, you can make your code more logical, efficient, and adaptable. Remember to always keep your conditions simple and test as you go to ensure your program behaves as you expect it to.

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