/in/foo.cc:4:7: error: stray '\357' in program
  int n，num=0;
       ^
/in/foo.cc:4:8: error: stray '\274' in program
  int n，num=0;
        ^
/in/foo.cc:4:9: error: stray '\214' in program
  int n，num=0;
         ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:4:10: error: expected initializer before 'num'
  int n，num=0;
          ^~~
/in/foo.cc:6:14: error: 'n' was not declared in this scope
  std::cin >> n;
              ^
/in/foo.cc:8:3: error: 'num' was not declared in this scope
   num = 1;
   ^~~
/in/foo.cc:18:4: error: 'num' was not declared in this scope
    num++;
    ^~~
/in/foo.cc:22:15: error: 'num' was not declared in this scope
  std::cout << num << std::endl;
               ^~~