return - statement

Return statement

è      Some times the called function may return a value to its calling function. For that return statement is used.

è      It is possible to pass any number of value from calling function to called function , but the called function can return only one value.

è      The format of return statement is as follow:

return;                       or                return(Expression);

Here, In first form of the return statement , it does not return any value. It returns only control to the caller. When return type of the function is void and want to return control from the middle of the function, this form is useful.

         

Ex,

                   void fun()

                   {

                             .....

                             .....

                             if(....)

                                return;

                             .....

                   }

In the second form of return with expression returns the value of the expression

          ex,

                   int fun(int x,int y)

                   {

                             .....

                             .....

                             return(x+y);

                   }

A function can have more than one return statement. Function returns control back to the caller as soon as first return executes. If return type is not void , return will not only returns control , but also returns value.

ex,

          int diff(int x,int y)

          {

                   if(x>y)

                      return(x-y);

                   else if(x<y)

                      return(y-x);

                   else

                      return(x+y);

          }

Posted By : Ruchita Pandya