View Compilation Error

0_0_38461310_18476.cpp: In function 'int main()':
0_0_38461310_18476.cpp:4:11: error: 'cin' was not declared in this scope
     while(cin>>num[0]>>num[1]>>num[2]&&(num[0]+num[1]+num[2])!=0)
           ^
0_0_38461310_18476.cpp:8:13: error: 'cout' was not declared in this scope
             cout<<1<<endl;
             ^
0_0_38461310_18476.cpp:8:22: error: 'endl' was not declared in this scope
             cout<<1<<endl;
                      ^
0_0_38461310_18476.cpp:12:13: error: 'cout' was not declared in this scope
             cout<<num[0]*1+num[1]*2+1<<endl;
             ^
0_0_38461310_18476.cpp:12:40: error: 'endl' was not declared in this scope
             cout<<num[0]*1+num[1]*2+1<<endl;
                                        ^
0_0_38461310_18476.cpp:16:13: error: 'cout' was not declared in this scope
             cout<<num[0]*1+num[1]*2+num[2]*5+1<<endl;
             ^
0_0_38461310_18476.cpp:16:49: error: 'endl' was not declared in this scope
             cout<<num[0]*1+num[1]*2+num[2]*5+1<<endl;
                                                 ^