incrementing in if statements?

This is a discussion on incrementing in if statements? within the C Programming forums, part of the General Programming Boards category; Hey can someone tell me a way to make the [b] in the if statement increment to 50? here is ...

  1. #1
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    incrementing in if statements?

    Hey can someone tell me a way to make the [b] in the if statement increment to 50?
    here is the code so far.

    Code:
      
      printf ("\nPlease enter the 4 digit registration of your car:");
      scanf ("%d", &rego_check);
      //for (b=0; b>50; b++)
      if (rego_check == rego_array [b])
      {
      printf ("\nThe registration you entered is already in the carpark please enter a new registration");
      carentry();
      }
      rego_array [i] = rego_check;
    Last edited by tomisme; 06-02-2008 at 06:35 PM. Reason: accidently pressed enter

  2. #2
    Dr Dipshi++ mike_g's Avatar
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    This will increment to 49:
    Code:
    for (b=0; b<50; b++)
    (Which is what you want if your array is size 50)

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    yeah i tried that above the if statement didnt seem to work. i cant think of any other place to put it that could work.

  4. #4
    Dr Dipshi++ mike_g's Avatar
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    Well you want to put opening and closing braces around the content you want to be included in the loop. Also, what is the variable 'i' on the last line. In the code you posted it would be undefined.

  5. #5
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    "i" is a global variable its a counter it increments by 1 everytime a new entry is made.

    Code:
      printf ("\nPlease enter the 4 digit registration of your car:");
      scanf ("%d", &rego_check);
      for (b=0; b>50; b++)
      {
      if (rego_check == rego_array [b])
      {
      printf ("\nThe registration you entered is already in the carpark please enter a new registration");
      carentry();
      }}
      rego_array [i] = rego_check;
    Still doesnt work.

    Im trying to ensure a user does not enter the same number twice.

  6. #6
    Dr Dipshi++ mike_g's Avatar
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    Have you initialized your array first? The for loop in the code you just posted still is not fixed (b>50). Apart from that it seems as if your code should work. What does carentry(); do?

  7. #7
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    Got it going, thanks for the help.

    (carentry() was that function, the call is a reset for when the user enters somthing invalid)

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