Can help me with the coding?

[cool17]

/*
IsScalarMatrix
---------------
Check if a Matrix is a Scalar matrix
where: diagonal elements all contain the same scalar aij.
Return (!false == true,!true == false)
*/
bool CDblMatrix::IsS calarMatrix()
{
int nRows = 0, nCols = 0;
double temp;


if (m_nCols == m_nRows)
{
temp = m_ppData[0][0];
for (nRows = 0; nRows < m_nRows; nRows++)
{
for (nCols = 0; nCols < m_nCols; nCols++)
{
if ( nRows && nCols == 0)

{
if(((nRows != nCols) && (m_ppData[nRows][nCols])) != 0)
{
cout<< "The matrix is not a Scalar Matrix"<< endl;
return false;
}
else if (((nRows == nCols) && (m_ppData[nRows][nCols])) != temp)
{
cout<< "The matrix is not a Scalar Matrix"<< endl;
return false;
}

}
else
{
cout<< "The matrix is a Scalar Matrix"<< endl;
return true;
}


}
}

}
else
{
cout<< "The matrix is not a square matrix."<< endl;
return false;
}

}


Hi i am writing a code for the scalar matrix. But when i did the testing i got problem...as those are not scalar matrix but it was detected as scalar...so can u help me please...thank you

[D_C]

You only need nRows, or nCols, not both. Replace

for (nRows = 0; nRows < m_nRows; nRows++)
{
  for (nCols = 0; nCols < m_nCols; nCols++)
  {
    ...
  }
}

by

for(nRows = 1; nRows < m_nRows; nRows++)
{
  if( matrix[nRows][nRows] != matrix[0][0] )
    // not a scalar matrix
}
// is a scalar matrix

[cool17]

oh ok..thank you

[shritha]

hey ...how to convert a given matrix to a scalar matrix,we can apply row and col operation only when we know the variables but if i want to accept the variables at run time??/