#include "calculator.h"
#include <math.h>
#include <stdio.h>

/* - pekny vypis */
static void print_double(double x){
    /* - cele cislo */
    if (fabs(x - round(x)) < 1e-9) {
        printf("%.0f\n", round(x));
        return;
    }
    /* - min 2 des */
    printf("%.2f\n", x);
}

int main(void){
    char line[512];

    /* - citaj riadky */
    while (fgets(line,sizeof(line),stdin)){
        double res;

        /* - vypocitaj */
        if (calc_evaluate(line,&res) != CALC_OK){
            fprintf(stderr,"Chyba: %s\n", calc_error());
            continue;
        }

        /* - vypis */
        print_double(res);
    }

    return 0;
}