prog_lab_1.2

#include <stdio.h>
#include "math.h"
int main (void) {
    int a, p, f, r; /*a - appartment number, p - porch , f- floor, r - room*/
    printf("Please, enter number of your appartment:");
    scanf("%i", &a);
    if(a>=1&&a<=256){
        printf("\nYour appartment settings:\n");
        p=(a-1)/64+1;
        switch(p) {
                case 1: printf("1st porch\n"); break;
                case 2: printf("2nd porch\n"); break;
                case 3: printf("3rd porch\n"); break;
                case 4: printf("4th porch\n"); break;
        }
        a=a-(p-1)*64;
        f=(a-1)/4+1;
        printf("%i floor\n", f);
        r=a%4;
        if(r==0) printf("3 rooms\n2 balcony");
        switch(r) {
            case 1: case 3: printf("2 rooms\n1 balcony"); break;
            case 2: printf("4 rooms\n3 balcony"); break;
            case 4: printf("3 rooms\n2 balcony"); break;
        }
    }
    else printf("\nError: Invalid number.");
    return 0;
}