View Compilation Error

0_0_18738312_21374.cpp:15:6: error: stray '\243' in program
      if(isalpha(str[i]))  str[i]=((str[i]-'A')+26-5)%26+'A'；
      ^
0_0_18738312_21374.cpp:15:6: error: stray '\273' in program
0_0_18738312_21374.cpp: In function 'int main(int, char**)':
0_0_18738312_21374.cpp:10:36: error: 'strcmp' was not declared in this scope
        if (!strcmp(str,"ENOOFINPUT")) break;
                                    ^
0_0_18738312_21374.cpp:17:5: error: expected ';' before '}' token
     }
     ^