foo.cc: In function 'int main()':
foo.cc:15:10: warning: 'b' is used uninitialized [-Wuninitialized]
   15 |         b=b-1;
      |         ~^~~~
foo.cc:6:15: note: 'b' was declared here
    6 |         int a,b;
      |               ^

正在同步测试数据，请稍后