Could someone help me with this for loop I wrote?

This is a discussion on Could someone help me with this for loop I wrote? within the C++ Programming forums, part of the General Programming Boards category; I've just started C++ this week, and I have an assignment where you have to create a console application that ...

  1. #1
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    Could someone help me with this for loop I wrote?

    I've just started C++ this week, and I have an assignment where you have to create a console application that asked the user how many numbers they would like to sum together, and then loops that many times, taking in a number and adding it to the sum each time. This is what I have -

    Code:
    int main()
    {
    
    
    	int repeat_amount, sum = 0, entered_number;
    
    
    	cout << "Enter the amount of numbers you wish to add together: ";
    	cin >> repeat_amount;
    
    
    	for (int number = 0;number == repeat_amount; number ++) {
    		cout << "Enter a number: ";
    		cin >> entered_number;
    		sum = sum + entered_number;
    	}
    
    
    	cout << sum;
    }
    The result is it doesn't allow me to enter any numbers except the first one. This is what I get when I run it -

    Enter the amount of numbers you wish to add:
    (then i enter a number and hit enter)
    0Press any key to continue...

  2. #2
    Registered User manasij7479's Avatar
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    Write
    for (int number = 0;number < repeat_amount; number ++)
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



  3. #3
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    I'll try that in a second, let me close out of this other program I started. Thanks for the response.

    Edit: Okay, that fixed it. That was such a small error and I had to ask for help, haha. But thanks man, I appreciate it very much.
    Last edited by English_Fire; 09-30-2011 at 12:28 PM.

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    Can U explain why number == repeat_amount' statement is not correct?

  5. #5
    Registered User manasij7479's Avatar
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    Quote Originally Posted by meterpreter View Post
    Can U explain why number == repeat_amount' statement is not correct?
    Because, that does not evaluate to be true for the required no. of times.
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



  6. #6
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    a for() loop repeats while the second parameter is true. if you initialize number to zero, it will not be equal to repeat_amount on the first iteration of the for loop, so it won't even run once.

  7. #7
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    Cleared! th@nks for reply.

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