fds

du2/program.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#define LINE_SIZE 100
+
+int horner(int coeffs[], int n, int x) {
+    int result = coeffs[0];
+    for (int i = 1; i < n; i++) {
+        result = result * x + coeffs[i];
+    }
+    return result;
+}
+
+int main() {
+    char line[LINE_SIZE];
+    memset(line, 0, LINE_SIZE);
+    
+    char* r = fgets(line, LINE_SIZE, stdin);
+    assert(r != NULL);
+    
+    char* endptr = NULL;
+    int x = strtol(line, &endptr, 10);
+    
+    if (endptr == line) {
+        fprintf(stderr, "Error: Invalid input.\n");
+        exit(EXIT_FAILURE);
+    }
+    
+    int coeffs[] = {2, 3, 4};
+    int n = sizeof(coeffs) / sizeof(coeffs[0]);
+    
+    int result = horner(coeffs, n, x);
+    
+    printf("The result of the polynomial evaluation is: %d\n", result);
+    
+    return 0;
+}