//Program to find diagonal of matrix

#include<iostream.h>

#include<conio.h>

void main()

{clrscr();

int A[10][10],B[10][10],m,n,i,j;

cout<<"\n enter the no. of rows:";

cin>>m;

cout<<"\n enter no. of column:";

cin>>n;

for(i=0;i<m;i++)

{ for(j=0;j<n;j++)

 { cout<<"/n enter A["<<i<<"]["<<j<<"] element:";

 cin>>A[i][j];

 }

  }

   cout<<"/n the matrix is:";

   for(i=0;i<m;i++)

   { cout<<"\n";

  for(j=0;j<n;j++)

    cout<<A[i][j]<<" ";

    }

  cout<<"/n first diagonal is:\n";

  for(i=0;i<n;i++)

  { for(j=0;j<m;j++)

  { if(i==j)

 cout<<A[i][j]<<" ";

 }

  }

   cout<<"\n second diagonal is:";

   for(i=0;i<n;i++)

   { for(j=0;j<m;j++)

  { if(i+j==n-1)

  cout<<A[i][j]<<" ";

  }

   }

    int sum1=0,sum2=0;

    for(i=0;i<n;i++)

    { for(j=0;j<m;j++)

    { if(i==j)

      sum1+=A[i][j];

      if(i+j==n-i)

 sum2+=A[i][j];

 }

  }

  cout<<"\n sum of first diagonal element="<<sum1;

  cout<<"\n sum of second diagonal element="<<sum2;

   if(i==j)

   { cout<<A[i][j]<<" ";

   sum1+=A[i][j];

  }

  getch();

  }