20. WAP to implement Upper Triangular Matrix using one-dimensional array.
PROGRAME CODE
#include<stdio.h>
#include<iostream>
using namespace std;
class utm{
int
arr[50][50],row,col,arr1[100];
public:
utm(){
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 MATRIX ELEMENTS ........"<<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 A UPPER TRIANGULAR MATRIX ....."<<endl;
else
cout<<"THE
MATRIX IS NOT A UPPER TRIANGULAR MATRIX ......"<<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
0;
else
return
1;
}
void
utm1(){
int
k=0,k2=0;
int
k1=row;
while(row>0){
k=k+row;
row--;
}
row=k1;
for(int
i=0;i<row;i++){
for(int
j=0;j<col;j++){
if(arr[i][j]!=0){
arr1[k2]=arr[i][j];
k2++;
}
}
}
cout<<"THE
UPPER TRI-DIAGONAL ELEMENTS ARE -> "<<endl;
for(int
p=0;p<k;p++)
cout<<arr1[p]<<"
";
cout<<endl;
}
void
display(){
for(int
i=0;i<row;i++){
for(int
j=0;j<col;j++)
cout<<arr[i][j]<<" ";
cout<<endl;
}
}
};
int main(){
int opt=0;
utm
ob;
do{
cout<<"\nPRESS
0 TO EXIT ........."<<endl;
cout<<"PRESS
1 TO ENTER MATRIX ........"<<endl;
cout<<"PRESS
2 TO DISPLAY MATRIX ......"<<endl;
cout<<"PRESS
3 TO DISPLAY UPPER TRIANGULAR ELEMENTS ......."<<endl;
cin>>opt;
switch(opt){
case
0:
break;
case
1:
ob.getdata();
break;
case
2:
ob.display();
break;
case
3:
ob.utm1();
break;
default:
cout<<"ERROR
CHOICE............."<<endl;
}
}while(opt!=0);
return
0;
}