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  1. #include <stdio.h>
  2.  
  3. /*****************************************************************
  4. >>> Student:  Bill Davern 
  5. >>> Date:     June 3, 2025
  6. ** Function:  Calculate_Simple_Interest
  7. **
  8. ** Description:  Simple Interest is the amount of interest
  9. **               calculated by using the formula:
  10. **
  11. **               interest = (P * R * T)
  12. **
  13. **               where P is the principle, r is the rate, and t
  14. **               is the time of the investment
  15. **
  16. **               This function will return the simple interest
  17. **               calculated based upon it being passed the principle,
  18. **               rate, and time.
  19. **
  20. ** Parameters:   Principle - The original principal to start with
  21. **               Rate      - The rate of interest.  If you wanted
  22. **                           9.5 percent it would be passed as 0.095
  23. **               Time      - The time in years
  24. **
  25. ** Returns:      Interest  - The amount of simple interest earned
  26. **
  27. ********************************************************************/
  28.  
  29. float Calculate_Simple_Interest (float principle, float rate, float time) 
  30. { 
  31.  
  32.     /* You will only need to create three simple statements here ... */ 
  33.     /* No other statements are needed.                               */          
  34.  
  35.     /* TO DO: Step 1) Define local variable of type float to hold interest  */ 
  36. 	float interest;
  37.  
  38.     /* TO DO: Step 2) Calculate simple interest earned.  Determine interest */ 
  39.     /* using the values in the parameters: principle, rate, and time ....   */
  40.     /* and assign that value to the local variable you created in step 1    */
  41.     /* that holds the interest                                              */ 
  42.     /* .... Hint: This statement is right in the first homework             */ 
  43.     interest = principle * rate * time;     
  44.  
  45.     /* TO DO: Step 3) Add a return statement to return the interest to main */ 
  46.     return interest;
  47.  
  48. } /* end Calculate_Simple_Interest */ 
  49.  
  50. int main (void) 
  51. { 
  52.     float interest;  /* The interest earned over a period of time */
  53.     float principle; /* The amount being invested */ 
  54.     float rate;      /* The interest rate earned */ 
  55.     float time;      /* The years of the investment */       
  56.  
  57.     /* Initialize the interest value */ 
  58.     interest = 0;
  59.  
  60.     /* Enter values needed to determine interest */ 
  61.     printf ("\nEnter your principle value: "); 
  62.     scanf ("%f", &principle);  
  63.  
  64.     printf ("\nEnter the rate: For example 9.5 percent would be .095: "); 
  65.     scanf ("%f", &rate);  
  66.  
  67.     printf ("\nEnter the period of time of your investment: :"); 
  68.     scanf ("%f", &time); 
  69.  
  70.     /* Call simple interest function to calculate the simple interest */
  71.     interest = Calculate_Simple_Interest (principle, rate, time); 
  72.  
  73.     /* Print the simple interest earned to the screen */ 
  74.     printf ("\n\nThe total simple interest earned is: $%8.2f\n", interest); 
  75.  
  76.     /* Challenge TO DO: Step 1)  Call Calculate_Compound_Interest function */
  77.     /*                           to calculate the compound interest.       */
  78.  
  79.     /* Challenge TO DO: Step 2)  Print the compound interest to the screen */ 
  80.  
  81.     return (0); /* indicate successful completion */
  82.  
  83. } /* end main */
  84.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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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 simple interest earned is: $   -0.00
https://ideone.com/1kRFrX
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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