Find simple interest where principal,time,and rate is givem from keyboard

 #include<stdio.h>

#include<conio.h>

main()

{

       int p, n ;

       float r, si ;

 printf("enter the principal :");

 scanf("%d",&p);

 printf("enter the time :");

 scanf("%d",&n);

 printf("enter the rate :");

 scanf("%f",&r);

        si = p * n * r / 100 ;

 printf ( "%f" , si ) ;

 getch ();

}

Output :

enter the principal :3000

enter the time :3

enter the rate :5

450.000000

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