Forms of if in C

The if statement can take any of the following forms:

if ( condition )

do this ;

if ( condition )
{
do this ;
and this ;
}

if ( condition )
do this ;
else
do this ;

if ( condition )
{
do this ;

and this ;

}
else
{
do this ;
and this ;
}

if ( condition )
do this ;
else
{
if ( condition )
do this ;
else
{
do this ;
and this ;
}
}

if ( condition )
{
if ( condition )
do this ;
else
{
do this ;
and this ;
}
}
else
do this ;

Posts to Review:

Write a C program to calculate the area & perimeter of the rectangle, and the area & circumference of the circle If Statement in C Logical Operator in C ! the logical operator not in C