Find percentage of a studemt when marks is given throught he keyboard

 #include<stdio.h>

#include<conio.h>

void main()

{

            int sub,s1,s2,s3,s4,s5;

            float per;

            clrscr ();

printf("enter 5 sub marks :\n"); 

scanf("%d %d %d %d %d",&s1,&s2,&s3,&s4,&s5 );

          sub=s1+s2+s3+s4+s5;

          per=sub/5;

printf("percent is :%f ",per);

getch ();

}

Output : 

enter 5 sub marks :

50

60

40

70

58

percent is : 55.000000

[Process completed (code 10) - press Enter]