Hi Boral... About the filename...
"I:\C programs\Program for finding first four central moments for grouped frequency distribution.c"
While this is technically not a bad filename, you should be aware that many compiler's tool chains will have a problem with the length of it and many will trip over the spaces. If there's any chance your code will be compiled by any other compiler, you should adopt a different naming convention for your files... For example, most people call the main source file in their projects "main.c" ....