#include<conio.h>
#include<stdio.h>
void main()
{
    float sv,pv,dep;
    int yos;
    clrscr();

    printf("Enter the value of purchase value :- ");
    scanf("%f",&pv);

    printf("Enter the year of service :- ");
    scanf("%d",&yos);

    printf("Enter the value of depreation :- ");
    scanf("%f",&dep);


    sv = pv - (dep * yos);
    printf("\n The salvage value equal to :- %f",sv);

    getch();
}


****************************** OUTPUT *********************************

Enter the value of purchase value :- 800
Enter the year of service :- 200
Enter the value of depreation :- 2

 The salvage value equal to :- 400.000000

************************************************************************