/in/foo.cc:8:12: warning: missing terminating " character
     printf("sum”);
            ^
/in/foo.cc:8:12: error: missing terminating " character
     printf("sum”);
            ^~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:9:5: error: expected primary-expression before 'return'
     return 0;
     ^~~~~~