Problem - for loop input

st8tic1 · #1 06-Mar-2004, 01:01

Greetings, I am using Borland CBuilderX (on fedora) and was working on an initial program (newbie, also not finished with the sorting part cause it won't even accept data), but it won't take my input from within my for loop. I was wondering if anyone has any knowledge as to why it won't work? the code looks right to me...

-------------------------------------------------------------------------

CPP / C++ / C Code:

#include <iostream>
int main ()
{
int matrix [2] [2];
  int x=0,z=0,i;

  std::cout<<"This program will sort data into least to most.\n";
 /************************************************************************/
  for (x<2;x=0;x++)
    
for (z<2;z=0;z++)
    {  
std::cin>>i;
      matrix [x][z]=i;
    }
    std::cout<<"input gathered successfully.\n";
/************************************************************************/
  for (x<2;x=0;x++)
    for (z<2;z=0;z++)
      std::cout<<matrix[x][z]<<std::endl;
  for (x<2;x=0;x++)
    for (z<2;z=0;z++)
    std::cout<<matrix [x][z]<<std::endl;
/************************************************************************/
  std::cout<<"Now these numbers will be sorted from least to most.";
  std::cin>>i;
    return 0;
}

dsmith · #2 06-Mar-2004, 07:42

Hi st8tic1. (what a strange name!)
It is your for loop constructs. A for loop has three entries in this order:

Initialization (z = 0)
Test (z<2) - The for statement will loop while this is true
Indexing (z++) - This happens at the end of the for statement.

So instead of:

CPP / C++ / C Code:

for (x<2;x=0;x++)

You for loops should look like:

CPP / C++ / C Code:

for(x=0; x < 2; x++)

Hope this helps.
d

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