1.11. C # if statement

One if a statement consists of a Boolean expression followed by one or more statements.

1.11.1. Grammar #

In C # if syntax of the statement:

if(boolean_expression) { /* The statement to be executed if the Boolean expression is true */ } 

If the Boolean expression is true , the code block within the if statement will be executed. If the Boolean expression is false , the first set of code (after closed parentheses) after the end of the if statement will be executed.

1.11.2. Flow chart #

1.11.3. Example #

using System; namespace DecisionMaking { class Program { static void Main(string[] args) { /* Definition of Local Variables */ int a = 10; /* Check Boolean conditions using if statements */ if (a < 20) { /* If the condition is true, output the following statement */ Console.WriteLine("A less than 20"); } Console.WriteLine("The value of a is {0}", a); Console.ReadLine(); } } } 

When the above code is compiled and executed, it produces the following results:

A less than 20 The value of a is 10 