Crear un programa que compruebe si un texto ingresado por teclado es o no un palindromo

char *reverse(char *str)
{
    int i, j;
    char *begin_ptr, *end_ptr, ch;
    begin_ptr = str;
    end_ptr = str;
    while (*end_ptr != '\0') {
        end_ptr++;
    }
    end_ptr--;
    for (i = 0; i < (end_ptr - begin_ptr) / 2; i++) {
        ch = *end_ptr;
        *end_ptr = *begin_ptr;
        *begin_ptr = ch;
        begin_ptr++;
        end_ptr--;
    }
    return str;
}

int main()
{
    char str[100];
    char *rev;
    printf("Enter the string to check if it is a palindrome\n");
    scanf("%s", str);
    rev = reverse(str);
    if (strcmp(rev, str) == 0) {
        printf("%s is a palindrome\n", str);
    } else {