Thread: C Simple child and parent back and forth

Im creating a small guess game between a child and a parent: The child takes in the input from user and makes that the number to guess, the parent simply goes into a loop trying to figure out which is the right number.
I can't get it to work fully. Also you can see I'm keeping track of how many times it takes, once its found, make a new one and then exits after 4 rounds.

Code:

#include <stdio.h> 
#include <unistd.h> 
#include <time.h> 
#include <stdlib.h>  
char readbuffer[100]; 

 int main() {  
    int pid, nbytes, i, input;   
    int fd[2] = {} ;   
    int guess = 0;   
    pid = fork();  
    int x;   
    
     srand((unsigned) time(NULL));  
     x = (rand() % 10 + 1);  

       if (pid == 0) 
    {     
       close(fd[0]);    
       printf("enter a number ");     
       scanf("%d", &input); 
      
       write(fd[1], &input, (sizeof(input)));
      
        if (x == input) 
        {    
            exit(0);     
        }  

      close(fd[1]);  
   }
 
  else 
  {   
     //PARENT     
    close(fd[1]);    
    nbytes = read(fd[0], &input, sizeof(input));  
   
    while (x != input)
    {    
      if (x != input) 
      {        
         guess++;       
      }     
    }   
      char answer; 
   
    if (x == input) 
   {    
      printf(" correct");       
      printf("Number of Guesses: %d\n", guess);
       exit(0);    
    }    

 //to reset random   
 
    x = (rand() % 10 + 1);  
   close(fd[0]);   } }

SourceForge.net: Indentation - cpwiki
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C Simple child and parent back and forth - Dev Shed