getDouble c++

double getDouble()
{
    char line[MAXBUFFER];   //buffer
    char curChar = ' ';
    double result;
    int temp;
    do {
        line[MAXBUFFER - 1] = '\n';
        fgets(line, MAXBUFFER - 1, stdin);
        temp = sscanf(line, "%lf%c", &result, &curChar);
        temp = !temp || temp < 0 || (curChar != '\n' && curChar != ' ');
        if (temp)
            printf("Error reading double value. Please, try input a double value again.\n");
    } while (temp); //not a result, but a number of read values
    if (line[MAXBUFFER - 1] != '\n') //clear garbage from console buffer
        while ((curChar = getchar()) != '\n' && curChar != EOF);
    return result;
}