IF ..... ELSE STATEMENT

IF ..... ELSE STATEMENT

The if .... else statement is an extension of the simple if statement. The

general form is if(test expression)

{

True-block statement(s)

}

else

{

False-block statement(s)

}

statement-x

If the test expression is true, then the true-block statement(s), immediately following the if statement are executed; otherwise, the false-block statement(s) are executed. In either case, either true-block or false-block will be executed, not  both. In both the cases, the control is transfered subsequently to statement-x.

Expression is true    if

x = = y x is equal to y

x != y x is not equal to y

x < y x is less than y

x > y x is greater than y

x <= y x is less than or equal to y

x >= y x is greater than or equal to y

/* A program that determines if an integer number is odd or even.

 stdio.h>

int main (void)

{

   int number, even;

         /* ask user for number */

   printf ("Enter an integer number: ");

   scanf ("%d", &number);

   /* determine if number is even and put in variable */

   even = (number % 2 == 0);

   /* display report */

   if (even)

        printf ("%d is an even number.\n", number);

        else

        printf ("%d is an odd number. \n", number);

   return (0);

}