C Program to interchange the main diagonal elements of the matrix. This Program will accept a matrix of order M x N and store its elements and interchange the main diagonal elements of the matrix with that of the secondary diagonal elements . Read more about C Programming Language .
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void main ()
{
static int ma[10][10];
int i,j,m,n,a;
printf ("Enetr the order of the matix n");
scanf ("%d %d",&m,&n);
if (m ==n )
{
printf ("Enter the co-efficients of the matrixn");
for (i=0;i<m;++i)
{
for (j=0;j<n;++j)
{
scanf ("%dx%d",&ma[i][j]);
}
}
printf ("The given matrix is n");
for (i=0;i<m;++i)
{
for (j=0;j<n;++j)
{
printf (" %d",ma[i][j]);
}
printf ("n");
}
for (i=0;i<m;++i)
{
a = ma[i][i];
ma[i][i] = ma[i][m-i-1];
ma[i][m-i-1] = a;
}
printf ("THe matrix after changing the n");
printf ("main diagonal & secondary diagonaln");
for (i=0;i<m;++i)
{
for (j=0;j<n;++j)
{
printf (" %d",ma[i][j]);
}
printf ("n");
}
}
else
printf ("The givan order is not square matrixn");
} /* end of main() */
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