Computer Science Canada How to make a money change program? |
| Author: | Inuyasha22 [ Wed Apr 20, 2005 8:14 am ] |
| Post subject: | How to make a money change program? |
hi everyone, i'm doing a money change program, like we can change USD into CND, or HKD into CND and so on, and i don't know what i should do in order to make them change money, so if there is anyone who can help me, that would be greatful, thank you~~~ |
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| Author: | Martin [ Wed Apr 20, 2005 8:25 am ] |
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Well, the best way to do that would be to set a base currency. Let's say that we have 5 currencies: A, B, C, D, E. Now, we'll assign A as the base currency: that is, all other currencies are going to be relative to A. We set the values of each currency in terms of 'how many A are they worth.' A = 1 B = 0.4 C = 10 D = 24 E = 0.8 That is, one A is worth one A. One B is worth 0.4 A. One C is worth 10 A, and so on. Now, let's say you want to know how many C's 5 D's are worth. What you do is convert D's into A's. 1 D is worth 24 A's, so therefor 5 D's are worth 24 * 5 = 120 A's Now we convert from A's to C's. 1 C = 10 A x C = 120 A With some simple math, we determine that x = 12. Therefor, 5 D's are worth 12 C's. |
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| Author: | Inuyasha22 [ Fri Apr 22, 2005 8:18 am ] |
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the currency changes a lot, what if i want get a site that will help me change the currency i use everytime? how can i do that? |
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