#include
using std::cout;
using std::endl;
#include
using std::islower;
using std::isupper;
using std::tolower;
using std::toupper;
int main()
{
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";
return 0;
}
According to isupper:
D is an uppercase letter
d is not an uppercase letter
8 is not an uppercase letter
$ is not an uppercase letter