/in/foo.c:3:1: error: stray '\357' in program
 ｛
 ^
/in/foo.c:3:2: error: stray '\275' in program
 ｛
  ^
/in/foo.c:3:3: error: stray '\233' in program
 ｛
   ^
/in/foo.c: In function 'main':
/in/foo.c:5:3: error: expected declaration specifiers before 'a'
   a=10;
   ^
/in/foo.c:6:3: error: expected declaration specifiers before 'b'
   b=20;
   ^
/in/foo.c:7:3: error: expected declaration specifiers before 'sum'
   sum=a+b;
   ^~~
/in/foo.c:8:3: error: expected declaration specifiers before 'printf'
   printf("%d\n",sum);
   ^~~~~~
/in/foo.c:9:3: error: expected declaration specifiers before 'return'
   return 0;
   ^~~~~~
/in/foo.c:10:1: error: expected declaration specifiers before '}' token
 }
 ^
/in/foo.c:4:11: error: declaration for parameter 'sum' but no such parameter
   int a,b,sum;
           ^~~
/in/foo.c:4:9: error: declaration for parameter 'b' but no such parameter
   int a,b,sum;
         ^
/in/foo.c:4:7: error: declaration for parameter 'a' but no such parameter
   int a,b,sum;
       ^
/in/foo.c:10:1: error: expected '{' at end of input
 }
 ^