foo.cc:3:6: error: stray '\343' in program
 using　namespace std;
      ^
foo.cc:3:7: error: stray '\200' in program
 using　namespace std;
       ^
foo.cc:3:8: error: stray '\200' in program
 using　namespace std;
        ^
foo.cc: In function 'int main()':
foo.cc:13:10: error: 'c' cannot be used as a function
  y=c(x==y)
          ^
foo.cc:16:3: error: 'eles' was not declared in this scope
  }eles
   ^~~~

[Hydro](https://hydro.ac)提供评测服务