foo.cc:10:14: error: stray '\357' in program
     renturn 0；
              ^
foo.cc:10:15: error: stray '\274' in program
     renturn 0；
               ^
foo.cc:10:16: error: stray '\233' in program
     renturn 0；
                ^
foo.cc: In function 'int main()':
foo.cc:10:5: error: 'renturn' was not declared in this scope
     renturn 0；
     ^~~~~~~
foo.cc:10:5: note: suggested alternative: 'extern'
     renturn 0；
     ^~~~~~~
     extern

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