Unix ln command 5(b)

#include<stdio.h>
#include<unistd.h>

int main(int argc,char** argv[])
{
   if(argc!=3)
      {
         printf("Enter three arguments\n");
         return 0;
      }
      
   if(link(argv[1],argv[2])==-1)
      {
         printf("Error linking\n");
         return 0;
      }
         printf("Link created\n");
         system("ls- l");
         return 0;
}