*Design a program to compute the balance of a deposit account at the end of a given period when the interest rate and initial balance are known.*

Example use:

C:\code>Interest 3

Starting balance is 188. Interest rate is 4%

Balance after 1 month(s) is 195.52

Balance after 2 month(s) is 203.341

Balance after 3 month(s) is 211.474

Final balance is 211.474

C:\code>

`#include <time.h>`

`#include <math.h>`

`#include <iostream.h>`

` `

`using namespace std;`

` `

`int main(int argc, char *argv[])`

`{`

` // make sure random numbers are random`

` srand(time(NULL));`

` rand();`

` `

` // the amount of months is given by the user`

` int iMonths = atoi(argv[1]); `

` // generate a random interest rate`

` // between 0.5 and 5 in 0.5 increments`

` float fInterest = (10 * rand()) / RAND_MAX;`

` fInterest /= 2;`

` // generate a random starting balance`

` // between 1 and 2000`

` float fBalance = ((2000 * rand()) / RAND_MAX)+1;`

` `

` // i've already used iostream.h, but i prefer printf`

` cout << "Starting balance is " << fBalance << " Interest rate is " << fInterest << "%\n";`

` // now loop through each month and add interest to the total`

` for (int n = 1; n <= iMonths; n++)`

` {`

` // add up the interest for this month`

` fBalance += fBalance * (fInterest / 100);`

` // show the balanace after this many months`

` cout << "Balance after " << n << " month(s) is " << fBalance << "\n";`

` }`

` // show the final balance`

` cout << "Final balance is " << fBalance;`

`}`

` `

- May 2, 2005 - Added solution 1.

© 2004-19 robson | cc unless stated