redirect ls output linux to parent

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <fcntl.h>

#define BUFF_SIZE (1 << 10)

int main(int argc, char *argv[]) {
    int pbuff[2];
    if (pipe(pbuff)) {
        perror("pipe");
        exit(1);
    }
    pid_t pid = fork();
    if (pid == -1) {
        perror("");
        exit(-1);
    }
    if (pid == 0) {//kid
        close(pbuff[0]);
        dup2(pbuff[1], STDOUT_FILENO);
        execlp("ls", "ls", "-l", NULL);
        fprintf(stderr, "execl error\n");
        exit(1);
    }
    close(pbuff[1]);
    char s[BUFF_SIZE];
    memset(s, 0, BUFF_SIZE);
    int cnt = 0;
    while (read(pbuff[0], &s, BUFF_SIZE)) {
        cnt += strlen(s);
    }
    printf("Cnt: %d\n", cnt);
    close(pbuff[0]);
    int stat;
    wait(&stat);
    return 0;
}