The >> operator interprets a number of type char as the character code and outputs the corresponding character:
char ch = '0'; cout << ch << ' ' << 'A'; // 0 A
It is possible to output the character code for a character.
The character code is stored in an int variable and the variable is then output.
int code = '0'; cout << code; // Output: 48
The '0' character is represented by ASCII Code 48. The program on the opposite page contains further examples.