Send N numbers from parent to child process

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main(){
    int pid,a,n,p[2],i,buffr1[100],buffr2[100];
    a = pipe(p);
    if(a == -1)
    {
       fprintf(stderr, "Pipe Failed.\n");
       return EXIT_FAILURE;
    }
    pid = fork();
    switch(pid){
       case -1:perror("main: fork");
          exit(1);
       case 0: n=read(p[0],buffr2,sizeof(buffr2));
          printf("In child process (ID: %d)\n", pid);
          n=n/sizeof(int);
          for(i=0;i<n;i++)
             printf("Number %d:- %d\n",i+1,buffr2[i]);
          exit(1);
          break;
       default: printf("In parent process (ID: %d)\n", pid);
          printf("Enter the limit:- ");
          scanf("%d",&n);
          for(i=0;i<n;i++){
             printf("Enter the element %d:- ",i+1);
             scanf("%d",&buffr1[i]);
          }
          write(p[1],buffr1,n*sizeof(int));
          waitpid(pid,NULL,0);
          break;
   }
   close(p[0]);
    close(p[1]);
    return 0;
}