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| Using functions islower, isupper, tolower, toupper |
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#include <iostream>
#include <ctype.h>
using namespace std;
int main()
{
cout << "According to islower:\n"
<< ( islower( 'p' ) ? "p is a" : "p is not a" )
<< " lowercase letter\n"
<< ( islower( 'P' ) ? "P is a" : "P is not a" )
<< " lowercase letter\n"
<< ( islower( '5' ) ? "5 is a" : "5 is not a" )
<< " lowercase letter\n"
<< ( islower( '!' ) ? "! is a" : "! is not a" )
<< " lowercase letter\n";
cout << "\nAccording to isupper:\n"
<< ( isupper( 'D' ) ? "D is an" : "D is not an" )
<< " uppercase letter\n"
<< ( isupper( 'd' ) ? "d is an" : "d is not an" )
<< " uppercase letter\n"
<< ( isupper( '8' ) ? "8 is an" : "8 is not an" )
<< " uppercase letter\n"
<< ( isupper('$') ? "$ is an" : "$ is not an" )
<< " uppercase letter\n";
cout << "\nu converted to uppercase is "
<< ( char ) toupper( 'u' )
<< "\n7 converted to uppercase is "
<< ( char ) toupper( '7' )
<< "\n$ converted to uppercase is "
<< ( char ) toupper( '$' )
<< "\nL converted to lowercase is "
<< ( char ) tolower( 'L' ) << endl;
return 0;
}
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| Related examples in the same category |
| 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 | | | | 10. | Using functions isdigit, isalpha, isalnum, and isxdigit | | | | 11. | Using functions isspace, iscntrl, ispunct, isprint, isgraph | | |
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