du3 - 3

du3/program.c

@@ -35,7 +35,7 @@ float pop_stack(struct stack *s) {
 void print_stack(struct stack *s) {
     for (int i = 0; i < s->size; i++) {
         if (i > 0) printf(" ");
-        printf("%g", s->values[i]);
+        printf("%.2f ", s->values[i]);
     }
     printf("\n");
 }
@@ -56,8 +56,11 @@ int main(void) {
     memset(&s, 0, sizeof(struct stack));
 
     char line[LINESIZE];
+    int had_input = 0;
 
     while (fgets(line, sizeof(line), stdin)) {
+	
+	had_input = 1;    
 	line[strcspn(line, "\n")] = '\0';
 
         //preskocit prazdny riadok
@@ -100,5 +103,9 @@ int main(void) {
         print_stack(&s);
     }
 
+    if (had_input) {
+    	printf("no input\n");
+    }
+
     return 0;
 }