What is Global variable and How to Defining Global Variables with Example

Global  variable and Defining Global Variables

Global variables are defined above main() in the following way:-

                short number,sum;

                int bignumber,bigsum;

                char letter;

                main()

                {

                }

It is also possible to pre-initialise global variables using the = operator for assignment.
For example:-

                float sum=0.0;

                int bigsum=0;

                char letter=`A';

                main()

                 {

                }