[Dev-C++] q3??

[senem b. <sbe...@ya...>]

 

include <iostream>
#include <stdlib.h>

int main()
{
      int nrows,ncolumns;
      nrows=ncolumns=5;
       int **arr=new int*[nrows];
       for(int i=0;i<ncolumns;i++) //why do i have to use a for loop
         arr[i]=new int[ncolumns];  //to create a multiple subs array
                                    // dynamically??
                                   //why can't i use  a code like:
                                   //int **arr=new int*[nrows];
                                   // *arr=new int[ncolumns];   ???


      for(int i=0;i<nrows;i++)
         for(int j=0;j<ncolumns;j++)
           arr[i][j]=0;

      for(int i=0;i<nrows;i++)
         for(int j=0;j<ncolumns;j++)
           cout<<arr[i][j]<<" ";

      cout<<sizeof(arr)/sizeof(int)<<endl; //and why does this part return 1
                                           //instead of 25??
      cout<<nrows<<" "<<ncolumns<<endl;
      system("PAUSE");
      return 0;
}



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