C program to write 2 -D array into file (one string on each line of the file)

C program to write 2 -D array into file (one string on each line of the file)

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <fcntl.h>

int main ()

{

    int fd;

    char a[10][20] = {"google", "aricent", "sparrow", "jumanji"};

    fd = open("/home/labuser/open_file", O_CREAT | O_RDWR | O_SYNC, 0755);

    if (fd < 0) {

        return 1;

    }

    a[0][strlen(a[0])] = '\n';

    write(fd, a[0], sizeof(a[0]));

    a[1][strlen(a[1])] = '\n';

    write(fd, a[1], sizeof(a[1]));

    a[2][strlen(a[2])] = '\n';

    write(fd, a[2], sizeof(a[2]));

    a[3][strlen(a[3])] = '\n';

    write(fd, a[3], sizeof(a[3]));

}