diff --git a/c/Pattern.c b/c/Pattern.c
index 64d5ff15..db69ad95 100644
--- a/c/Pattern.c
+++ b/c/Pattern.c
@@ -1,9 +1,12 @@
 #include<stdio.h>
 #include<conio.h>
-int main()
+
+//Execution of every program start with main function.
+int main(void)
 {
-  int i,w,p;
+  int i,w,p; //variable declaration
   char str[]="SURYA";
+  
   printf("\n");
   for(i=0;i<5;i++)
   {
@@ -16,8 +19,8 @@ int main()
     p=i+1;
     printf("\n%-5.*s",p,str);
   }
-  getch();
-  return 0;
+  getch(); //getch take any value form the keyboard.
+  return 0; // it will return 0 to the main function because return-type of main function is int.
 }
 /*
 The output of the code will be as follows---