View Compilation Error

0_0_19217172_19252.cpp: In function 'int main()':
0_0_19217172_19252.cpp:64:3: error: 'cout' was not declared in this scope
   cout<<endl;
   ^
0_0_19217172_19252.cpp:64:9: error: 'endl' was not declared in this scope
   cout<<endl;
         ^