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what am i missing in this i/o file?

Discussion in 'C++' started by coryD, Mar 16, 2007.

  1. coryD

    coryD New Member

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    Code:
    #include <iostream>
    #include <fstream>
    using namespace std;
    int main ()
    {
    	ifstream in_file;
    	
    	in_file.open("Summation.dat",ios::in);
    	int i;
    	int A[20];
    	
    	float sumPos;
    	float sumNeg;
    	
    	in_file >> i;
    
    	while (!in_file.eof())
    	{
    	for (i = 0; i < 20; i++)
    	{
    		if (i < 0)
    		sumNeg += A[i];
    		
    		else sumPos += A[i];
    	}
    	in_file >> i;
    	}
    		
    	cout << "Sum of Positive Integers = " << sumPos << endl;
    	cout << "Sum of Negative integers = " << sumNeg << endl;
    	
    	in_file.close();
    	return 0;
    }
     
    Last edited by a moderator: Mar 16, 2007
  2. shabbir

    shabbir Administrator Staff Member

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    if (i < 0)
    sumNeg += A;

    This is unnecessary and will never will be executed inside the for loop.
     
  3. DaWei

    DaWei New Member

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    Furthermore, you have nothing in A[] to work with. You will tend to get better responses if you explain how your code is failing to meet your expectations. You're making us guess, is that nice? Fortunately you have some obvious blunders.
     

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