View Compilation Error

0_0_27736887_8478.cpp: In function 'int main()':
0_0_27736887_8478.cpp:4:21: error: 'scanf' was not declared in this scope
     scanf( "%d", &T );
                     ^
0_0_27736887_8478.cpp:17:34: error: 'printf' was not declared in this scope
         printf( "%lld\n", cnt% 2 );
                                  ^