Find increased and decreased value

 #include<stdio.h>

#include<conio.h>

void main()

{

          

              int a,b,c;

              clrscr ();

    printf("enter any no.");

          scanf("%d",&a);

        b=a;

        b++;

        a--;

        c=a;

printf("\n increasement value is %d",b);

printf("\n decreased value is %d",c);

getch();

}

Output : 

enter any no.36

 increasement value is 37

 decreased value is 35

[Process completed (code 10) - press Enter]