Specifying minimum field width

/* 0506 Specifying minimum field width */
#include <stdio.h>

main()
{
int num1, num2;

num1 = 12;
num2 = 12345;
printf("%d\n", num1);
printf("%d\n", num2);
printf("%5d\n", num1);
printf("%05d\n", num1);
printf("%2d\n", num2);
return 0;
}