View Compilation Error

0_0_34192716_23664.cpp:11:4: error: missing terminating " character
    if (s == "
    ^
0_0_34192716_23664.cpp: In function 'int main()':
0_0_34192716_23664.cpp:6:21: error: 'strlen' was not declared in this scope
   int len = strlen(a);
                     ^
0_0_34192716_23664.cpp:11:10: error: expected primary-expression at end of input
    if (s == "
          ^
0_0_34192716_23664.cpp:11:10: error: expected ')' at end of input
0_0_34192716_23664.cpp:11:10: error: expected statement at end of input
0_0_34192716_23664.cpp:11:10: error: expected '}' at end of input
0_0_34192716_23664.cpp:11:10: error: expected '}' at end of input
0_0_34192716_23664.cpp:11:10: error: expected '}' at end of input