View Compilation Error

0_0_29302019_26827.cpp:24:9: error: missing terminating " character
         if(a[i]=="na
         ^
0_0_29302019_26827.cpp: In function 'int main()':
0_0_29302019_26827.cpp:24:16: error: expected primary-expression at end of input
         if(a[i]=="na
                ^
0_0_29302019_26827.cpp:24:16: error: expected ')' at end of input
0_0_29302019_26827.cpp:24:16: error: expected statement at end of input
0_0_29302019_26827.cpp:24:16: error: expected '}' at end of input
0_0_29302019_26827.cpp:24:16: error: expected '}' at end of input