foo.cc:5:11: error: stray '\357' in program
    5 |  int n,f=0，y;
      |           ^
foo.cc:5:12: error: stray '\274' in program
    5 |  int n,f=0，y;
      |            ^
foo.cc:5:13: error: stray '\214' in program
    5 |  int n,f=0，y;
      |             ^
foo.cc: In function 'int main()':
foo.cc:5:14: error: expected ',' or ';' before 'y'
    5 |  int n,f=0，y;
      |              ^
foo.cc:18:3: error: 'y' was not declared in this scope
   18 |   y=n-i;
      |   ^

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