help with formatting output

[mark]

for(int k=0;k<50;++k)
{if(k==10 || k==20 || k== 30 || k==40)
cout<<endl;}
else
cout<<" "<<k<<" ";
}
this prints as follows

1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17....


ie the numbers are not left or right aligned or appear in neatly
arranged columns.

How to get the numbers printed so that they appear (like left aligned)
in neatly arranged columns like below

1 2 3 4....
11 12 13 14...
21 22 23 24...

 

[Victor Bazarov]

for(int k=0;k<50;++k)
{if(k==10 || k==20 || k== 30 || k==40)
cout<<endl;}
else
cout<<" "<<k<<" ";
}
this prints as follows

1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17....


ie the numbers are not left or right aligned or appear in neatly
arranged columns.

How to get the numbers printed so that they appear (like left aligned)
in neatly arranged columns like below

1 2 3 4....
11 12 13 14...
21 22 23 24...

Please read about 'setw' and other stream manipulators.

V