Computer Science Canada Make sure someone enters a string |
| Author: | chelsee [ Sat Dec 16, 2006 8:55 pm ] |
| Post subject: | Make sure someone enters a string |
How do I make sure someone enters a string instead of an int or real? |
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| Author: | Ultrahex [ Sat Dec 16, 2006 9:03 pm ] |
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easiest way is read everything in as a String and check and then convert for using strintok ( s : string ) : boolean and check whether it is then convert and set as your integer variable. |
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| Author: | mish [ Sat Dec 16, 2006 10:44 pm ] |
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you would have to errortrap the user input. you would have to of course put declare variables first. |
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| Author: | ericfourfour [ Sat Dec 16, 2006 10:45 pm ] | ||
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You should actually use strrealok. This method will return true if a string can be converted to a real number. It will return false if it cannot.
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| Author: | mish [ Sat Dec 16, 2006 10:47 pm ] |
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LOLL whats a strrealok? o_O that looks an awful lot like an errortrap to me >.< |
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| Author: | StealthArcher [ Sat Dec 16, 2006 10:53 pm ] |
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Specifically these statements say "String OK", or in the case you refer to"String-Real OK" meaning that the given input can work with the stated conditions. |
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| Author: | ericfourfour [ Sat Dec 16, 2006 11:49 pm ] |
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mish wrote: LOLL whats a strrealok? o_O that looks an awful lot like an errortrap to me >.<
F10. I think there is also a tutorial on it. And did you not read my post? I said exactly what it does. |
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