Printing Value Variations on a single integer

#include 

int main(void)
{
 int k = 678;

 printf("%%d   %%o   %%x   %%X"); 
/* Display format as heading */
 printf("\n%d  %o  %x  %X", k, k, k, k );     
/* Display values */

 /* Display format as heading then display the values */
 printf("\n\n%%8d       %%-8d      %%+8d      %%08d      %%-+8d");
 printf("\n%8d  %-8d  %-+8d  %08d  %-+8d\n", k, k, k, k, k );
 return 0;
}