#include <stdio.h>

int main()
{
  message();
  return(0); 
}

void message(){
 FILE *fp;
  char line[2];			/* line of data from unix command*/
   
  fp = popen("echo hey", "r");
  
	while ( fgets( line, sizeof line, fp))
  {
    printf("%s", line);
  }
  
  pclose(fp);
  }