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Message Box and if statements in Borland C++

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Message Box and if statements in Borland C++, Bit of help??

oggy36	25 Nov, 2005 - 04:54 AM Post #1
New D.I.C Head Joined: 25 Nov, 2005 Posts: 2 My Contributions	Can anyone tell me how to prompt a message box when character is entered into a text box, when only integers are required much appriciated!
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oggy36	25 Nov, 2005 - 05:04 AM Post #2
New D.I.C Head Joined: 25 Nov, 2005 Posts: 2 My Contributions	QUOTE(oggy36 @ 25 Nov, 2005 - 06:51 AM) Can anyone tell me how to prompt a message box when character is entered into a text box, when only integers are required much appriciated! if (txtEdit1-> Text== ?????) It aint char... any suggestions?? if (txtEdit1-> Text== ?????) It aint char... any suggestions??
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Amadeus	25 Nov, 2005 - 06:51 AM Post #3
g++ -o drink whiskey.cpp Joined: 12 Jul, 2002 Posts: 12,158 Thanked 32 times Dream Kudos: 25 My Contributions	If it is only one character that you are checking, then simply use the isdigit() function CODE if (isdigit(txtEdit1-> Text)==0) ShowMessage("Integers only, please."); If it is a string of characters, then set a boolean flag to true...traverse the string in a for loop testing each character with isdigit..if it returns false anywhere, set the flag to false, break the loop, test the flag condition, and print the message.
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