If statement in C

If statement

The keyword "if" tells the compiler that what follows is decision control statement.

"If" statement is a conditional branching statement. In conditional branching statement a condition is evaluated,if it is evaluate true a group of statement is executed,or if it is evaluate false then statement are skipped.

For example, by using an if statement to check a user entered password, your program can decide whether a user is allowed access to the program.

Syntax of if statement is:-

If(condition is true)

Execute this statement;

The condition following the keyword "if" is always enclosed with in a pair of parentheses. If the condition is true then execute the statement if false then the statement is not executed, instead the program skips past it.

The block of statements to be executed must be enclosed in opening and closing braces. If only one statement needs to be executed then braces need not be used.

Example of if program

main()

{

Int num;

Printf(“enter the number\\n”);

Scanf(“%d”,num);

If (number>0)

Printf(“number is positive”);

}

Answered by Sunil 

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