language: C (gcc-4.3.4)
date: 110 days 0 hours ago
link:
visibility: public 
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/*
 
Title:  Calculate Simple Interest Example in C
 
Name:  Matthew Sutton
 
Description:
 
This formula and example was taken from the about.com Mathematics web site, which
has lots of useful information and formulas.
 
 URL:  http://math.about.com/od/businessmath/ss/Interest.htm
 
The amount of interest can be calculated by using the formula: I = Prt
 
 - where P is the principle, r is the rate, and t is the time of the investment
 
As an example, say we had to borrow or invest an amount of $4500.   The bank gives us
an interest rate of 9.5% over a period of 6 years.  So, let's plug in the values, and we get:
 
 I = (4500) (0.095) * (6)
 
 I = $2565.00
 
*/
 
#include <stdio.h>
int main (void)
{
 
   float interest;    /* The interest earned over a period of time */
   float principle;   /* The amount being invested                 */
   float rate;        /* The interest rate earned                  */
   float time;        /* The years of the investment               */
 
   /* Enter values needed to determine interest */
 
   printf ("Enter your principle value: ");
   scanf ("%f", &principle);
   printf("\n"); /* new line */
 
   printf ("Enter the rate:  For example 9.5 percent would be .095: ");
   scanf  ("%f", &rate);
   printf("\n"); /* new line */
 
   printf ("Enter the period of time of your investment: ");
   scanf  ("%f", &time);
   printf("\n"); /* new line */
 
   /* If any value inputted is zero, then the interest is zero */
   if (principle == 0 || rate == 0 || time == 0)
   {
       printf("\nSince at least one of your values is zero, your interest will be zero\n");
       printf("... next time, make sure all values entered are non-zero!\n");
 
       interest = 0;
   }
   else 
   {
       /* calculate simple interest earned */
       interest = principle * rate * time;
   }
 
   /* print the interest earned to the screen */
   printf("\n\nThe total interest earned is:  $%8.2f\n", interest);
 
   return (0);  /* indicate successful completion */
 
} /* end main */
  • upload with new input
  • # 5:   hide   clone   input   110 days 0 hours ago

    result: Success     time: 0.02s    memory: 1724 kB     returned value: 0 

    28000
.069
15
    Enter your principle value: 
Enter the rate:  For example 9.5 percent would be .095: 
Enter the period of time of your investment: 


The total interest earned is:  $28980.00
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