Сделал 46е, но не оформил в правильном виде

46Ex/main.c

@@ -1,7 +1,34 @@
 #include <stdio.h>
 #include "tools.h"
 
-int solutionPolynomial(FILE * file, double x, double * &derivative, double * &polynomial)
+/*
+Example: 5 4 3 2 1
+x: 2
+
+Answer: 80 + 32 + 12 + 4 + 1 = 129
+        160 + 48 + 12 + 2 = 222
+*/
+
+int solutionPolynomial(FILE * file, double x, double * derivative, double * polynomial);
+
+int solutionPolynomial(FILE * file, double x, double * derivative, double * polynomial) {
+    double current;
+
+    if (fscanf(file, "%lf", &current) != 1) {
+        printf("File is empty!");
+        return 1;
+    }
+
+    *derivative = *polynomial = 0;
+
+    do {
+        *derivative = *derivative * x + *polynomial;
+        *polynomial = *polynomial * x + current;
+        // c4x^3 + c3x^2 + c2x + c = c = c2x + c = c3x^2 + c2x + c = ...
+    } while (fscanf(file, "%lf", &current) == 1);
+
+    return 0;
+}
 
 int main(void) {
     double x, derivative, polynomial;
@@ -10,4 +37,6 @@ int main(void) {
 
     printf("Enter the x cordinate: ");
     scanf("%lf", &x);
+    if (solutionPolynomial(file, x, &derivative, &polynomial)) return 1;
+    printf("The solution of the polynomial is %.0lf\nThe solution of the derivative is %.0lf", polynomial, derivative);
 }