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 Topic: Interest calculator
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| Interest calculator |
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| mikehauncho |
| Posted: 21-November-2007 at 11:21pm | IP Logged
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Newbie
Group: Newbie
Joined: 10-November-2007
Location: United States
Posts: 8
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heres some source for a interest calcalator, i would like to hear sugestions if you got em.
#include <cstdlib>
#include <iostream>
#include <string>
using namespace std;
int main(int argc, char *argv[])
{
float x;
int u;
int y = 0;
string d;
string t = "no";
int p;
do
{
cout << "How many dollars would you like to calculate?" << endl;
cin >> x;
cout << "How many years would you like to calculate?" << endl;
cin >> u;
cout << "How much interest per year would you like?" << endl;
cin >> p;
while (y<u)
{
y= y + 1;
x= x*(p*0.01) + x;
}
cout << "After " << u << " years, you would have " << x << " dollars in the bank";
cout << " calculated at a " << p << "% interest rate"<< endl;
cout << endl << "Would you like to calculate another sum of money?" << endl;
cin >> d;
}
while (d != t);
return EXIT_SUCCESS;
}
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| DutchDude |
| Posted: 23-November-2007 at 5:51pm | IP Logged
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Super Dedicated Groupie
Group: Super Dedicated Groupie
Joined: 02-April-2007
Location: Netherlands
Posts: 71
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Nice idea, but some small ideas.
Use a double for x, maybe people need bigger numbers, think of companies!
in fact, don't use x, give it a real name, call it Dollars, or AmountOfMoneyPeopleSayTheyHave, but the last one is stupid, legal, but stupid!
Go for Dollars :P Same with TimeFrame and Interest.
Next up is a nice learning moment.
while (y<u)
{
y= y + 1;
x= x*(p*0.01) + x;
}
is really nice, but has some ways of making it more funky :D
y = y + 1;
Can change to
y += 1;
Or if you're really lazy
y++;
while loop to for loop.
for (int y=0; y<u; y++) // no need to predefine y
{
x += (x*(p*0.01)); // Personal, looks neat, easy to read, bit of added safety
}
Also, I wouldn't use a do while loop, because they confuse people, using while is easier to read, and also shorter to write :P
And what if I an just lazy, and press just an n/N, or write no like No, nO or even NO!
Final thing, use the Tab and Enter more in your code, make is easier to read, I use 1 empty line after includes, then 2 after my variables.
cout << "How many dollars would you like to calculate?" << endl;
cin >> Dollars;
cout << "How many years would you like to calculate?" << endl;
cin >> Time;
cout << "How much interest per year would you like?" << endl;
cin >> Interest;
for (int y=0; y<Time; y++)
{
Dollars += (Dollars*(Interest*0.01));
}
Programming is for lazy people only! Don't make it hard, keep it simple.
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| mikehauncho |
| Posted: 25-November-2007 at 3:59pm | IP Logged
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Newbie
Group: Newbie
Joined: 10-November-2007
Location: United States
Posts: 8
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DutchDude wrote:
Nice idea, but some small ideas.
Use a double for x, maybe people need bigger numbers, think of companies!
in fact, don't use x, give it a real name, call it Dollars, or AmountOfMoneyPeopleSayTheyHave, but the last one is stupid, legal, but stupid!
Go for Dollars :P Same with TimeFrame and Interest.
Next up is a nice learning moment.
while (y<u)
{
y= y + 1;
x= x*(p*0.01) + x;
}
is really nice, but has some ways of making it more funky :D
y = y + 1;
Can change to
y += 1;
Or if you're really lazy
y++;
while loop to for loop.
for (int y=0; y<u; y++) // no need to predefine y
{
x += (x*(p*0.01)); // Personal, looks neat, easy to read, bit of added safety
}
Also, I wouldn't use a do while loop, because they confuse people, using while is easier to read, and also shorter to write :P
And what if I an just lazy, and press just an n/N, or write no like No, nO or even NO!
Final thing, use the Tab and Enter more in your code, make is easier to read, I use 1 empty line after includes, then 2 after my variables.
cout << "How many dollars would you like to calculate?" << endl;
cin >> Dollars;
cout << "How many years would you like to calculate?" << endl;
cin >> Time;
cout << "How much interest per year would you like?" << endl;
cin >> Interest;
for (int y=0; y<Time; y++)
{
Dollars += (Dollars*(Interest*0.01));
}
Programming is for lazy people only! Don't make it hard, keep it simple.
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ya, i was just having a really hard time finding a method to calculate the interest taking into account the years but very good input, thanks alot (its a now i know moment)
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