Write a C++ program to print the right angled triangle of 1 and 0’s using for loop.
#include<iostream>
using namespace std;
int main()
{
int i, j, rows;
cout << "Enter Right Triangle of 1 & 0 Pattern Row = ";
cin >> rows;
cout << "Right Triangle of 1 and 0 Numbers Pattern\n";
for(i = 1; i <= rows; i++)
{
for(j = 1; j <= i; j++)
{
if(j % 2 == 0) {
cout << 0 << " ";
}
else {
cout << 1 << " ";
}
}
cout << "\n";
}
return 0;
}

This C++ example prints the right angled triangle with 1 and 0’s as alternative columns using a while loop.
#include<iostream>
using namespace std;
int main()
{
int i, j, rows;
cout << "Enter Right Triangle of 1 & 0 Pattern Row = ";
cin >> rows;
cout << "Right Triangle of 1 and 0 Numbers Pattern\n";
i = 1;
while( i <= rows)
{
j = 1;
while( j <= i)
{
if(j % 2 == 0) {
cout << 0 << " ";
}
else {
cout << 1 << " ";
}
j++;
}
cout << "\n";
i++;
}
return 0;
}
Enter Right Triangle of 1 & 0 Pattern Row = 15
Right Triangle of 1 and 0 Numbers Pattern
1
1 0
1 0 1
1 0 1 0
1 0 1 0 1
1 0 1 0 1 0
1 0 1 0 1 0 1
1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0 1 0 1 0 1 0
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1