revert

a1/program.c

@@ -1,15 +1,65 @@
+#include<stdlib.h>
 #include<stdio.h>
 
+long double power(long double x, int y);
+
 int main() {
     double x;
-double a ;
+    double coef[100];
-double b ;
+    int coefCount = 0;
-double c ;
+    int retVal;
-scanf("%lf",&x);
+    long double result = 0;
-scanf("%lf",&a);
-scanf("%lf",&b);
-scanf("%lf",&c);
-double r = (a*(x*x))+(b*x)+c;
-printf ("Vysledok je :%.2lf\n",r);
 
+    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;
 }