View Compilation Error

0_0_13562072_2912.cpp:1:1: error: 'include' does not name a type
 include <iostream>
 ^
0_0_13562072_2912.cpp: In function 'int main()':
0_0_13562072_2912.cpp:27:30: error: 'isalpha' was not declared in this scope
             if(isalpha(src[i]))
                              ^
0_0_13562072_2912.cpp:67:13: error: 'cout' was not declared in this scope
             cout<<res[i]<<endl;
             ^
0_0_13562072_2912.cpp:67:27: error: 'endl' was not declared in this scope
             cout<<res[i]<<endl;
                           ^
0_0_13562072_2912.cpp:69:9: error: 'cout' was not declared in this scope
         cout<<"A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"<<endl;
         ^
0_0_13562072_2912.cpp:69:70: error: 'endl' was not declared in this scope
         cout<<"A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"<<endl;
                                                                      ^