Is there any differences between following two methods, for fork handling. I thought there exist no differnces but I saw some difference when using pipe (for reading file content)

Method 1:

pid = fork();
switch(pid) {
    case -1:
            eerrno = errno;
            printf("fork error. %s(%d)n", strerror(errno), errno);
            exit(eerrno);

    case 0:
        // ....
    default:
        // ...
        wait(NULL);
}

Method 2:

if ( (pid = fork()) < 0) {
    eerrno = errno;
    printf("fork error. %s(%d)n", strerror(errno), errno);
    exit(eerrno);
}
if (pid == 0)
        // ....
else {
      wait(NULL);
      // ...
}