//Downloaded From theonlinetutorials.com
//Matrix Manipulation
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
void matrixdisp(int a[10][10],int m,int n)
{
int i,j;
for(i=0;i<m;i++)
{
 cout<<endl;
 for(j=0;j<n;j++)
 {
 cout<<a[i][j]<<"";
 }
 }
 }
 void matrixtrans(int a[10][10],int m,int n)
 {
 int i,j;
 for(i=0;i<m;i++)
 {
 cout<<endl;
 for(j=0;j<n;j++)
 {
 cout<<a[j][i];
 }}
 }
 void rowsum(int a[10][10],int m,int n)
 {
 int i,j,s=0,k=0;
 for(i=0;i<m;i++)
 {
 for(j=0;j<n;j++)
 {
 s+=a[i][j];
 }
 cout<<"\nSum of"<<i+1<<"th row:"<<s;
 s=0;
 }
 for(i=0;i<m;i++)
 {
 for(j=0;j<n;j++)
 {
 k+=a[i][j];
 }
 cout<<"\nSum of"<<j+1<<"th column:"<<k;
 k=0;
 }
 }
 void trngl(int a[10][10],int m,int n)
 {
 int i,j,p,q;
 for(i=0;i<m;i++)
 {
 cout<<endl;
 for(j=0;j<n;j++)
 {
 if((i+j)<m)
 cout<<a[i][j];
 else
 cout<<"-";
 }}
 cout<<endl;
 for(p=0;p<m;p++)
 {
 cout<<endl;
 for(q=0;q<n;q++)
 {
 if(p<=q)
 cout<<a[p][q];
 else
 cout<<"";
 }}}
 void ltrngl(int a[10][10],int m,int n)
 {
 int r,s,x,y;
 for(r=0;r<m;r++)
 {
 cout<<endl;
 for(s=0;s<n;s++)
 {
 if(s<=r)
 cout<<a[r][s];
 else
 cout<<" ";
 }}
 cout<<endl;
 for(x=0;x<m;x++)
 {
 cout<<endl;
 for(y=0;y<n;y++)
 {
 if((x+y)<=n+1)
 cout<<a[x][y];
 else
 cout<<" ";
 }}}
 void dsum(int a[10][10],int m,int n)
 {
 int i,j,s=0,k=0;
 for(i=0;i<m;i++)
 {
 for(j=0;j<n;j++)
 {
 if(i==j)
 s+=a[i][j];
 }
 }
 cout<<"Sum of left diagonal:"<<s;
 for(int x=0;x<m;x++)
 {
 for(int y=0;y<n;y++)
 {
 if((x+y)==(m-1))
 k+=a[x][y];
 }
 }

 cout<<"Sum of right diagonal:"<<k;
 }
 void main()
 {
 clrscr();
 int i,j,m,n;
 int opt;
 char chr;
 int a[10][10];
 cout<<"Enter the no of rows:";
 cin>>m;
 cout<<"Enter the no of columns:";
 cin>>n;
 cout<<"\nInput the elements of the matrix:";
 for(i=0;i<m;i++)
 {
 for(j=0;j<m;j++)
 {
 cin>>a[i][j];
 }
 }

 do
 {
 clrscr();
 cout<<"MENU\n";
 cout<<"1.Display Matrix\n2.Display Transpose\n3.Display sum of rows and columns\n4.Display Upper Triangles\n5.Display Lower triangle\n6.Sum of the diagonals\n";
 cout<<"Enter option:";
 cin>>opt;
 switch(opt)
 {
 case 1:cout<<"The matrix is:";
 matrixdisp(a,m,n);
 break;
 case 2:cout<<"The transpose is:";
 matrixtrans(a,m,n);
 break;
 case 3:cout<<"The sum of columns and rows:";
 rowsum(a,m,n);
 break;
 case 4:if(m==n)
 cout<<"Upper triangular matrices are:";
 trngl(a,m,n);
 break;
 case 5:if(m==n)
 cout<<"Lower triangular matrices are:";
 ltrngl(a,m,n);
 break;
 case 6:if(m==n)
 cout<<"Sum of the diagonals :";
 dsum(a,m,n);
 break;
 default:cout<<"Wrong option!!"<<endl;
 }
 cout<<"\n\nDo you want to continue?(y/n):";
 cin>>chr;
 }
 while((chr=='y')||(chr=='Y'));
 getch();
 }

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Tagged as: C++ Program - Matrix Manipulation, CPP Program - Matrix Manipulation, Matrix Manipulation, Matrix Manipulation in C++, Matrix Manipulation in CPP