1. Find the Simple Interest. Inputs are principal amount, period in year and rate of interest.

/* 1.find the simple intrest.

      input are principal amount , peroid in year and rate of intrest */

#include<stdio.h>

#include<conio.h>

void main()

{

    int amount, year, rate, intrest;

    clrscr();

    printf("enter a principal amount: ");

    scanf("%d",&amount);

    printf("\nenter a peroid in year: ");

    scanf("%d",&year);

    printf("\nenter a rate of intrest: ");

    scanf("%d",&rate);

    intrest =( amount * year * rate ) / 100 ;

    printf("\n\nThe simple intrest is= %d",intrest);

    getch();

}

/*      output:

enter a principal amount: 3000

enter a peroid in year: 2

enter a rate of intrest: 3

The simple intrest is= 180

*/