Thread: loop to get particular pattern

How to use for loop to get particular pattern in c++?

I am learning C++ programming language. In our lecture sir give one program where I have to show following output.

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
I tried different method but none of them worked out. Can anybody tell me how to use for loop to get particular output in c++? Any suggestion would be highly appreciated.

1) You have to use 2 for loop to obtain that output. In following program I have use 2 numeral to obtain this harvest. Just try to know it.

#include <iostream>
using namespace std;

int main() {
int sizes;
cout << "Enter the correct length: ";
cin >> sizes;
for(int a=0; a<sizes; a++) {
for(int k=1; k<sizes-a; k++)
cout << ' ';
for(int m=0; m<a*2+1; m++)
cout << '&';
cout << endl;
}
return 0;
}