foo.cc:7:13: error: stray '\357' in program
 cout<<x*(x+2）<<endl;
             ^
foo.cc:7:14: error: stray '\274' in program
 cout<<x*(x+2）<<endl;
              ^
foo.cc:7:15: error: stray '\211' in program
 cout<<x*(x+2）<<endl;
               ^
foo.cc: In function 'int main()':
foo.cc:7:16: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
 cout<<x*(x+2）<<endl;
          ~~~~~~^~~~~~
foo.cc:7:11: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
 cout<<x*(x+2）<<endl;
          ~^~
foo.cc:7:22: error: expected ')' before ';' token
 cout<<x*(x+2）<<endl;
                      ^

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