diff --git a/du2/program.c b/du2/program.c
index f742046..f81804b 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -8,11 +8,10 @@
 int read_double(double *value, int coef_index) {
     char line[LINE_SIZE];
     if (fgets(line, LINE_SIZE, stdin) == NULL) {
-        return 0; // Chyba pri čítaní
+        return 0; 
     }
     line[strcspn(line, "\r\n")] = 0;
     
-    
     if (strlen(line) == 0) {
         return 0;
     }
@@ -20,10 +19,9 @@ int read_double(double *value, int coef_index) {
     char *endptr;
     *value = strtod(line, &endptr);
     
-    // Ak nebolo načítané číslo alebo sú tam neplatné znaky
     if (endptr == line || *endptr != '\0') {
         printf("Nepodarilo sa nacitat polynom na %d mieste.\n", coef_index);
-        return 0;
+        return -1;  
     }
     return 1;
 }
@@ -39,7 +37,11 @@ int main() {
     int coef_count = 0;
 
     while (1) {
-        if (!read_double(&coef, coef_count + 2)) {
+        int status = read_double(&coef, coef_count + 2);
+        if (status == -1) {
+            return 0;  
+        }
+        if (status == 0) {
             if (coef_count == 0) {
                 return 1;
             }