The VOID keyword.

The void keyword allows us to create functions that either do not require any parameters or do not return a value.

The following example shows a function that does not return a value. 


    void Print_Square(int Number);

    main()
    {
       Print_Square(10);
       exit(0);
    }
	
    void Print_Square(int Number)
    {
       printf("%d squared is %d\n",Number, Number*Number);
    }

The next example shows a function that does not require any parameters: 


    #include 
    #include 

    int Random(void);

    main()
    {
       printf("A random number is %d\n", Random());
       exit(0);
    }

    int Random(void)
    {
       srand((unsigned int)time((time_t *)NULL));
       return( rand());
    }

Example:

void example

See also:

Functions Void pointers

Top Master Index Keywords Functions

Martin Leslie