getdouble

#include <stdio.h>
#include <conio.h>
#include <math.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>
#include <ctype.h>

void clear(void)
{
    while(getchar()!='\n');
}
double getdouble(double min, double  max)
{
    double value;
    char after;
    int  rc,keeptrying = 1;
    do
    {
        printf("Enter a whole number\n"
        "in the range [%lf,%lf] : ", min, max);
        rc = scanf("%lf%c", &value, &after);
        if (rc == 0) {
           printf("**No input accepted!**\n\n");
           clear();
        } else if (after != '\n') {
           printf("**Trailing characters!**\n\n");
           clear();
        } else if (value < min || value > max) {
            printf("**Out of range!**\n\n");
        } else
            keeptrying = 0;
    } while (keeptrying == 1);

    //printf("%lf", value);
    return value;
}
main()
{
    double a;
    printf(" a = %10.10lf",getdouble(0,100));
}