Here is the C++ program to print upperhalf and lowerhalf triangle of a square matrix.
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#include<iostream> using namespace std; int main() { int a[10][10],i,j,m; cout<<"Enter size of the Matrix(min:3,max:5):"; cin>>m; cout<<"\nEnter the Matrix row wise:\n"; for(i=0;i<m;i++) for(j=0;j<m;++j) cin>>a[i][j]; cout<<"\n\n"; for(i=0;i<m;++i) { for(j=0;j<m;++j) { if(i<j) cout<<a[i][j]<<" "; else cout<<" "; } cout<<"\n"; } cout<<"\n\n"; for(i=0;i<m;++i) { for(j=0;j<m;++j) { if(j<i) cout<<a[i][j]<<" "; else cout<<" "; } cout<<"\n"; } return 0; } |
Output
Enter size of the Matrix(min:3,max:5):3
Enter the Matrix row wise:
1 2 3
4 5 6
7 8 9
2 3
6
4
7 8