/in/foo.cc:12:15: error: stray '\357' in program
   while(i1<=x1）
               ^
/in/foo.cc:12:16: error: stray '\274' in program
   while(i1<=x1）
                ^
/in/foo.cc:12:17: error: stray '\211' in program
   while(i1<=x1）
                 ^
/in/foo.cc:18:11: error: stray '\357' in program
   int i2=2；
           ^
/in/foo.cc:18:12: error: stray '\274' in program
   int i2=2；
            ^
/in/foo.cc:18:13: error: stray '\233' in program
   int i2=2；
             ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:13:3: error: expected ')' before '{' token
   {   
   ^
/in/foo.cc:19:3: error: expected ',' or ';' before 'while'
   while(i2<x2) 
   ^~~~~