View Compilation Error

0_0_39036980_20199.cpp: In function 'int main()':
0_0_39036980_20199.cpp:46:43: error: expected primary-expression before '%' token
   46 |         printf("Case %d is not a tree.\n",%num);
      |                                           ^
0_0_39036980_20199.cpp:47:44: error: expected primary-expression before '%' token
   47 |         else printf("Case %d is a tree.\n",%num);
      |                                            ^