Question

1
1 2
1 2 3
1 2 3 4
cu for in c++

Answer 1

#include<iostream.h>
int n, i, j;
void main()
{
cout<<"n="; cin>>n;
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
cout<<j<<" ";
cout<<endl;
}
}