Print using command line arguments

Im trying make a program print a specific output using a enviroment variable in the command line, but the program seems to be stuck on my first input.

Here's my code

#include <stdio.h>
#include <stdlib.h>



void print_data(char*select);

int main (int argc, char * argv[]){

int ret;
char *ch = NULL;


   if( argc == 2)
   {
      ch = argv[1];
   }
   else
   {
      ch = getenv("V1");
   }

   void print_data(ch);

   return 0;
}
void print_data(char* select){

      if(select, "k")
      {
          printf("Value set to key\n");
      }
      else if(select, "l")
      {
         printf("Value set to last name\n");
      }
      else if (select, " ")
      {
         printf("Value set to %s\n", select);
      }
   }

My problem is that the program either only prints "Value set to key" or "Value set to last name". How can I use the pointer in Print_data to check what command is entered in the command line?

Output: