View Compilation Error

0_0_32754503_18208.cpp:22:2: error: stray '\243' in program
  return 0；
  ^
0_0_32754503_18208.cpp:22:2: error: stray '\273' in program
0_0_32754503_18208.cpp: In function 'int main()':
0_0_32754503_18208.cpp:11:3: error: 'len' was not declared in this scope
   len = strlen(str);
   ^
0_0_32754503_18208.cpp:11:19: error: 'strlen' was not declared in this scope
   len = strlen(str);
                   ^
0_0_32754503_18208.cpp:23:1: error: expected ';' before '}' token
 }
 ^