#include<stdio.h>

#include<conio.h>

void main()

{

int bs,hra,da,gs;

clrscr();

printf("enter employee basic salary");

scanf("%d",&bs);

da=bs*0.4;

hra=bs*0.2;

gs=bs+da+hra;

printf("gross salary=%d",gs);

getch();

}

output:

enter basic salary 10000

gross salary 16000