Question

C++ How to find data from columns of data.

I'm opening a file that has data values in random order that I need to find values for, I need to able to do this for any length of the column and I'm not allowed to use an array or functions. I need to do this with a loop preferably.

For example:

4435         5345345

5435534   5345

45            543543

How would I find:   (5345345 - 4435) / ( 4435 + 5345345)

                       + (5345 - 5435534) / ( 5435535 + 5345)

                           + (543543 - 45) / (45 + 543543) )

Answer 1

#include <iostream>
#include<fstream>
using namespace std;

int main()
{
float columnData=0;
fstream colfile("colmnsdata.txt", ios_base::in);
int a,b;
while (colfile >> a>>b)
{
columnData+=(b-a)/(float)(a+b);
//cout<<a<<" " <<b<<endl;
}

cout<<"column data:"<<columnData<<endl;
return 0;
}

colmnsdata.txt

4435 5345345
5435534 5345
45 543543

OUTPUT:

column data :1.00014 Process returned 0 〈0x0〉 execution time : 0-100 s Press any key to continue