Thread: Tiles in kitchen

Good day, I need help with this code, please.

Code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <float.h>

#define EPS 1e-5



double gcd(double val1, double val2)
{
    double tmp, a;



    if(val1 > val2){

        tmp = val1;
        val1 = val2;
        val2 = tmp;
    }

    a = fmod(val2, val1);

    if(fabs(a) < EPS){
    return val1;
    }

    else {
    return gcd(a, val1);
    }
}

double lcm(double num1, double num2)
{
    double lcmr, gcdr;
    gcdr = gcd(num1, num2);

    lcmr = ((num1 * num2) / gcdr);

    return lcmr;

}

double decimal(double a1)
{
    int a1i, k;
    double r, i;
    k = 0;
    a1i = a1;
    r = (a1 - a1i);

    for(i = 0; i < 1; i = i + 0.1)
    {
        if( fabs(i - r) <= EPS * fabs(i + r) )
        {
            k = 1;
        }
    }

    if(k != 1){
        printf("Nespravny vstup.\n");
        return 0;
    }
    return k;
}

int main()
{
    double tile, joint, value1, x, y, max, alf, blf;
    int in, a, b;
    value1 = 0.1;
    max = 10000000;
    printf("Minimalni velikost: \n");
    if (scanf(" %lf %lf", &x, &y) !=2 || (x - max) > EPS * fabs(x + max) || (y - max) > EPS * fabs(y + max) || x <= 0 || y <= 0){
    printf("Nespravny vstup.\n");
    return 0;
    }

     decimal(x);
     decimal(y);

    printf("Zadej cisla: \n");
    while( ( in = scanf("%lf %lf", &tile, &joint)) != EOF)
    {

    decimal(tile);
    decimal(joint);

    if(in != 2 || tile < 0 || joint < 0)
    {
        printf("Nespravny vstup.\n");
        return 0;
    }

    if((tile - max) > EPS * fabs(tile + max) || tile <= 0)
    {
        printf("Nespravny vstup.\n");
        return 0;
    }

        value1 = lcm(value1, tile + joint);

    }


    a = x / value1;
    b = y / value1;

    alf = a * value1;
    blf = b * value1;

    while(x >= alf)
    {

    alf = alf + value1;

    }


    while(y >= blf)
    {

    blf = blf + value1;

    }

    printf("alf: %lf\n", alf);
    printf("blf: %lf\n", blf);


    return 0;
}

I have this code and need to calculate minimal width and length of the kitchen.



I have unknown count of tiles with unknow extent and joint. This code is perfect when joint = 0, but when I add joint, code doesnt work. The accuracy is on millimeters, so 0.1, 0.2, 0.3 ... I dont know which tile will be used so every tile + joint have to pave the kitchen. And I can use only whole tile. I just dont know, where to add the joint. Thank you.

I tried it but this works for max 2 tiles. If I had 3 or more tiles Its not effective. The A and B are inputs of minimal kitchen size. So

Code:

tileLength*N + joint*(N+1) >= A
tileWidth*M + joint*(M+1) >= B