for loops in c++

This is a discussion on for loops in c++ within the C++ Programming forums, part of the General Programming Boards category; I am writing a program using for loops and outputting the number of iterations in each loop. However, my program ...

  1. #1
    Registered User brianptodd's Avatar
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    for loops in c++

    I am writing a program using for loops and outputting the number of iterations in each loop. However, my program is outputting a line for every iteration of the loop, not just the total number of iterations.

    Is there a way to count the number of iterations of a loop and output that total?

    Attached is the program.

    Brian
    Attached Files Attached Files

  2. #2
    Confused Magos's Avatar
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    Code:
    int Counter = 0;
    
    for(int i=0; i<10; i++)
    {
       Counter++;
    
       ... //Do whatever you want
    }
    
    cout << Counter;
    You could also print i+1, but that depends on which starting value i has. A general formula for this loop:

    for(int i=a; i<b; i++)

    would be: b-a times (assuming that the for loop completes, and is not breaked).
    MagosX.com

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  3. #3
    Code Monkey Davros's Avatar
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    You mean something like:

    Code:
    int cnt = 0;
    for (int i = -10; i <= 10; i++)
    {
      cnt++;
    }
    
    cout << "Loop 4 executes " << cnt << " times.";
    }
    OS: Windows XP
    Compilers: MinGW (Code::Blocks), BCB 5

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  4. #4
    Registered User brianptodd's Avatar
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    Thanks for the help

    Thanks for your help.

    Brian

  5. #5
    Registered User brianptodd's Avatar
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    problems

    In my program I am running 7 for loops, using counter for each one leaves me with each loop adding its iterations to the counter. Do I need to use a different name for each counter?

    Brian

  6. #6
    Confused Magos's Avatar
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    Depends. If you print the result after each loop you can use the same. Just remember to nullify it (set it to 0) after every loop.
    Code:
    int Counter = 0;
    
    for(...)
    {
       Counter++;
    }
    
    cout << "Loop 1: " << Counter;
    Counter = 0;
    
    for(...)
    {
       Counter++;
    }
    
    cout << "Loop 2: " << Counter;
    Counter = 0;
    
    for(...)
    {
       Counter++;
    }
    
    cout << "Loop 3: " << Counter;
    MagosX.com

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  7. #7
    Registered User Gnoober's Avatar
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    edit: I guess I answered his question about the same time Magos did... sorry

  8. #8
    Registered User brianptodd's Avatar
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    thanks all

    Thanks for your help again. I am just getting started so I'm sure most of my questions will be easily answered.

    Brian

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