18. WAP to implement Diagonal Matrix using one-dimensional array.
PROGRAME CODE
#include<stdio.h>
#include<iostream>
using namespace std;
class dia{
int
arr[50][50],row,col,arr1[50];
public:
dia(){
row=0;
col=0;
}
void
getdata(){
cout<<"ENTER
THE VALUE OF THE ROW ->"<<endl;
cin>>row;
cout<<"ENTER
THE VALUE OF THE COLOM ->"<<endl;
cin>>col;
cout<<"ENTER
THE DATA OF THE MATRIX ->"<<endl;
for(int
i=0;i<row;i++){
for(int
j=0;j<col;j++)
cin>>arr[i][j];
}
if(check())
cout<<"THE
MATRIX IS DIAGONAL ......."<<endl;
else
cout<<"THE
MATRIX IS NOT DIAGONAL ....."<<endl;
}
int
check(){
int
flag1=0,flag2=0;
for(int
i=0;i<row;i++){
for(int
j=0;j<col;j++){
if(i==j&&arr[i][j]==0)
flag1++;
if(i!=j&&arr[i][j]!=0)
flag2++;
}
}
if(flag1==0&&flag2==0)
return
1;
else
return
0;
}
void
diaarray(){
if(check()){
int
j=0,i=0;
while(i<row){
arr1[i]=arr[i][j];
i++;
j++;
}
}
else
cout<<"THE
MATRIX IS NOT A DIAGONAL MATRIX ......"<<endl;
}
void
display(){
cout<<"THE
ORIGINAL MATRIX IS ->"<<endl;
for(int
i=0;i<row;i++){
for(int
j=0;j<col;j++)
cout<<arr[i][j]<<" ";
cout<<endl;
}
}
void
display1(){
cout<<"THE
DIAGONAI ELEMENTS ->"<<endl;
for(int
i=0;i<col;i++)
cout<<arr1[i]<<" ";
cout<<endl;
}
};
int main(){
dia
ob;
int
opt=0;
do{
cout<<"\nPRESS
0 TO EXIT....."<<endl;
cout<<"PRESS
1 TO CREAT A MATRIX......."<<endl;
cout<<"PRESS
2 TO DISPLAY ORIGINAL MATRIX ........"<<endl;
cout<<"PRESS
3 TO DISPLAY THE DIAGONAL ELEMENTS ......"<<endl;
cin>>opt;
switch(opt){
case
0:
break;
case
1:
ob.getdata();
break;
case
2:
ob.display();
break;
case
3:
ob.diaarray();
ob.display1();
break;
default:
cout<<"IT
IS A ERROR CHOOICE ....."<<endl;
}
}while(opt!=0);
return
0;
}
