View Compilation Error

0_0_25175274_5154.cpp: In function 'int main()':
0_0_25175274_5154.cpp:31:9: error: 'cout' was not declared in this scope
         cout<<x<<"/"<<y<<endl;
         ^
0_0_25175274_5154.cpp:31:26: error: 'endl' was not declared in this scope
         cout<<x<<"/"<<y<<endl;
                          ^
0_0_25175274_5154.cpp:32:5: error: expected '}' at end of input
     }
     ^