View Compilation Error

0_0_37733590_5814.cpp: In function 'int main()':
0_0_37733590_5814.cpp:29:13: error: 'cout' was not declared in this scope
             cout << "Alice\n";
             ^
0_0_37733590_5814.cpp:31:13: error: 'cout' was not declared in this scope
             cout << "Bob\n";
             ^