How to print numeric pyramid in C++ Program

How to print numeric pyramid in C++ Program

# include  
#include 
# include  
using namespace std; 
main() 
{ 
int i,j; 
for(i=1;i<=5;i++) 
{ for(j=1;j<=i;j++) 
cout<<j;
cout<<"\n"; 
} 
return 0;
}