Question

In c++, setw function is used to set the number of characters to be used as the field width for the next insertion operation. Is there any function in C, I mean, in standard c library, which does the same thing?

Answer 1

printf ("%5d", 42);

Will print 42 using 5 spaces. Read the man pages of printf to understand how character padding, overflow and other nuances work.

EDIT:
Some examples –

int x = 4000;
printf ("1234567890\n");
printf ("%05d\n", x);
printf ("%d\n", x);
printf ("%5d\n", x);
printf ("%2d\n", x);

Gives the output

1234567890
04000
4000
 4000
4000

Notice that the %2d was too small to handle the number passed to it, yet still printed the entire value.