The problem is: Write a program (in C) that prints the accumulated value of an i

Question

The problem is:

Write a program (in C) that prints the accumulated value of an initial investment invested at a specified annual interest and compounded annually for a specified number of years. If the accumulated amount at the start of a year is acc_amount, then at the end of one year the accumulated amount is:

acc_amount = acc_amount + acc_amount * annual_interest

Use a function that returns the accumulated value given the amount, interest (as a decimal, so 5% = 0.05), and years. The prototype is:

float calc_acc_amt(float acc_amount, float annual_interest, int years);

My professor also gives us some more information: the program should process user input until the user enters 0 for the initial amount.

This is my code so far-- right now i'm having trouble with the while loop (the loop works, but when i put in 0 for initial amount it doesn't quit & only quits after i put in zero as all my inputs). I also am not sure how to go about doing more than 1 year of compounding.

Thank you!

int main() // variables float acc_amount; float annual_interest; int years; float total II initial amount // annual interest rate as decimal II amount of years being compounded // total anount // prompt user for initial amount printf("Enter initial investment (0 to quit): "); scanf("%f", &acc-amount;); // prompt user for annual interest rate printf("Enter annual interest rate:"; scanf("%f", &annual-interest;); /I prompt user for amount of years printf("Enter number of years being compounded: "); scanf("%d", &years;); while (accamount 0) II user Loop - II compute anount, call calc_acc_amt fxn total calc_acc_amt (acc_amount, annual_interest, years); printf("Enter initial investment (0 to quit): "); scanf("%f", &acc-amount; ) ; printf("Enter annual interest rate:"; scanf("%f", &annual-interest;); printf("Enter number of years being compounded: "); scanf("%d", &years;); /I end program printf("Program ended.n") Ii calc acc amt function float calc_acc_amt(float acc_amount, float annual_interest, int years) /I variables float total; /I compute total account amount totalacc_amount acc_amount annual_interest; // total account amount // print result printf("The total account amount is %4.2f ", total); return total; 64,0-1 Bot

Explanation / Answer

#include<stdio.h>

float calc_acc_amt(float acc_amount, float annual_interest, int years){
      int i;
      float sum;

      sum = acc_amount;

      for(i=0; i<years; i++){
          sum = sum +   (annual_interest/100) * acc_amount;
      }
      return sum;
}

int main(){

    float acc_amt;
    float intr_rate;
    int years;
    float total;
    float sum;

    printf("Enter initial amount:");
    scanf("%f",&acc_amt);

    printf("Enter rate of intrest:");
    scanf("%f",&intr_rate);

    printf("Enter number of years:");
    scanf("%d",&years);

    sum = calc_acc_amt(acc_amt,intr_rate,years);
    printf("Accumulated amount : %f", sum);

    while (1){

       printf(" Enter initial amount:");
       scanf("%f",&acc_amt);
       if (acc_amt <= 0)
          break;

       printf(" Enter rate of intrest:");
       scanf("%f",&intr_rate);

       printf(" Enter number of years:");
       scanf("%d",&years);

       sum = calc_acc_amt(acc_amt,intr_rate,years);
       printf("Accumulated amount : %f", sum);

    }   

}

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