19 : C Program to Compute Simple Interest (SI)

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In order to calculate Simple Interest you need to know Principle Amount, Rate and Duration values. You need to get these values from user using scanf fuction.

Variables :

1. principle : (Datatype int) : to hold principle amount entered by user.

1. rate : (Datatype int) : to hold rate entered by user.

1. duration : (Datatype int) : to hold duration entered by user.

2. simpleInterest : (Datatype fload) : To hold Simple Interest calculated

Formula :

SI = (Principle x Rate x Duration)/100

Functions :

printf() : is used to display something on the console/screen. Format specifier %d in printf function is used to display a int variable on screen. \n is used to add a newline

scanf() : is used to fetch data inputted by the user on the console/screen using keyboard. %d in scanf is indicates that inputted text is of type int.

 * 1000+ C programs + tutorials
 * 19_compute_simple_interest.c
 *  Created on: Oct 20, 2014
 *  Author: Code2care.org


void main() {

  int principle;
  int rate;
  int duration;
  float simpleInterest;

//	clrscr();

	printf(" Simple Interest Calcuation :  ");

	printf("\n\n Enter Principle Amount : ");
	scanf("%d", &principle);
    printf("\n\n Enter Rate of Interest : ");
	scanf("%d", &rate);
    printf("\n\n Enter Duration : ");
    scanf("%d", &duration);
    simpleInterest = (principle*duration*rate)/100;
    printf("\n\nSimple Interest :  %lf  \n",simpleInterest);

//	getch();


  • Output :

      Simple Interest Calcuation : 10000

      Enter Principle Amount : 5

      Enter Rate of Interest : 10

      Enter Duration :

      Simple Interest : 5000.000000

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