| 1. | Wrap char pointer to a String class | |  |
| 2. | Read string and output its length | |  |
| 3. | Declare a stack class for characters. | |  |
| 4. | Overload string reversal function. | |  |
| 5. | Enters a character and outputs its octal, decimal, and hexadecimal code. | | |
| 6. | cin and cout work with char array | |  |
| 7. | Declares str just before it is needed | |  |
| 8. | Using C strings: cin,=.sync, getline | |  |
| 9. | Convert a number to a char then convert to upper case and lower case | | |
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| 10. | Using functions islower, isupper, tolower, toupper | | |
| 11. | Using functions isdigit, isalpha, isalnum, and isxdigit | | |
| 12. | Using functions isspace, iscntrl, ispunct, isprint, isgraph | | |