Update cv3/program.c

cv3/program.c

@@ -18,7 +18,7 @@ void push_stack(struct stack *s, float value) {
         s->values[s->size] = value;
         s->size++;
     } else {
-        printf("no input.\n");
+        printf("full stack\n");
         exit(1); // Exit the program on overflow
     }
 }