View Compilation Error

0_0_36502066_27756.cpp: In function 'int main()':
0_0_36502066_27756.cpp:42:9: error: 'cout' was not declared in this scope
         cout<<cnt<<sum<<endl;
         ^
0_0_36502066_27756.cpp:42:25: error: 'endl' was not declared in this scope
         cout<<cnt<<sum<<endl;
                         ^