pvjc20/a1/program.c

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

long double power(long double x, int y);

int main() {
    double x;
    double coef[100];
    int coefCount = 0;
    int retVal;
    long double result = 0;

    if ((retVal = scanf("%lf", &x)) <= 0 || retVal == EOF) {
        printf("%s\n", "Chyba: Nespravny vstup");
        return 0;
    }

    for (int i=0; i<100; i++) {
        retVal = scanf("%lf", &coef[coefCount]);

        if (coef[i] == 0) {
            break;
        }

        if (retVal <= 0 || retVal == EOF) {
            break;
        }

        coefCount++;
    }

    // printf("CoefCount:%d\n", coefCount);

    for (int i=0; i<coefCount; i++) {
        int pCoef = coefCount - i - 1;
        
        if (pCoef > 0) {
            result += coef[i] * power(x, pCoef);
        } else {
            result += coef[i];
        }

        // printf("c:%lf; p:%d; r:%Lf\n", coef[i], pCoef, result);
    }

    printf("Vysledok je :%.2Lf\n", result);

    return 0;
}

long double power(long double x, int y) {
    long double result = x;

    if (y == 0) {
        return 0;
    } else if (y == 1) {
        return result;
    }

    for (int i=0; i<y-1; i++) {
        result *= x;
    }

    return result;
}