if statement

if statement

syntax

if(expression)
{
     Statement 1
     Statement 2
}
Statement n

Flowchart

• An if statement consists of an if header and if body
• An if header consists of an if clause followed by an if controlling expression enclosed within parentheses

An if statement is executed as follows

• The if controlling expression is evaluated
• If the controlling expression evaluates to true, the statement constituting the if body is executed
• If the if controlling expression evaluates to false, then the statements present outside if will be executed

Example

#include<stdio.h>
int main()
{
	int age;
	printf("Enter the age: ");
	scanf("%d",&age);
	if(age >= 18)
	{
		printf("The person is eligible to vote");
	}
	return 0;
}

Output

Enter the age: 19
The person is eligible to vote

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