having trouble using loops

This is a discussion on having trouble using loops within the C++ Programming forums, part of the General Programming Boards category; Ahem, I suggested it first! Actually it's a well-known solution, so neither of us deserves praise . . . ....

  1. #31
    Frequently Quite Prolix dwks's Avatar
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    Ahem, I suggested it first!

    Actually it's a well-known solution, so neither of us deserves praise . . . .
    dwk

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  2. #32
    C++まいる!Cをこわせ!
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    Ah, it got lost somewhere in the thread! I see it now.
    You outsmarted as all Actually, I didn't know there was such an optimization. Well, I don't really work with loops that way. Often... anyway... I think...

  3. #33
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    lmao.. found my stupid mistake..

    thanks guys..

  4. #34
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    one more quick questions guys

    how can i make a program reject a negative value from being stored in array. e.g if a user inputs a negative value, how can i display a message that will tell the user to enter a positive value.

  5. #35
    Frequently Quite Prolix dwks's Avatar
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    Guess. Maybe something along the lines of
    1. Get a number from the user.
    2. If the number is negative:
      • Print an error message.
      • Get another number from the user.
      • Go to step 2.
    3. Viola! You have your number.

    That can be simplified, of course, for example if you use a do-while loop instead . . . but try that and see what happens.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


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    My website: http://dwks.theprogrammingsite.com/
    Projects: codeform, xuni, atlantis, nort, etc.

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