diff --git a/cv3/program.c b/cv3/program.c
index c6294d5..5335c75 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -42,7 +42,7 @@ int main(){
                 if(char_value[0] == '-'){
                     float a = pop_stack(&myStack);
                     float b = pop_stack(&myStack);                    
-                    float c = a-b;
+                    float c = b-a;
                     push_stack(&myStack, c);
                     print_stack(&myStack);
                     printf("\n");
@@ -70,6 +70,7 @@ int main(){
                 printf("\n");
             }
         }else{
+            puts("no input");
             break;
         }
     } 
@@ -79,9 +80,8 @@ int main(){
 }
 
 void print_stack(struct stack* stack){
-    printf(">");
     for(int i = 0; i < stack->size; i++){
-        printf(" %f ",stack->values[i]);
+        printf("%.2f ",stack->values[i]);
     }
 }