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the Boolean expression is false.

nested if statements You can use one if or else if statement inside another
if or else if statement(s).

switch statement A switch statement allows a variable to be tested for
equality against a list of values.

nested switch statements You can use one switch statement inside another
switch statement(s).

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

Syntax
The syntax of an ‘if’ statement in C programming language is:

if(boolean_expression)

{
/* statement(s) will execute if the boolean expression is true */

}

If the Boolean expression evaluates to true, then the block of code inside the ‘if’
statement will be executed. If the Boolean expression evaluates to false, then the first set of code
after the end of the ‘if’ statement (after the closing curly brace) will be executed.
C programming language assumes any non-zero and non-null values as true and if
it is either zero or null, then it is assumed as false value.

Flow Diagram

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