ispunct
#include<iostream.h>
#include<conio.h>
#include<ctype.h>
char letter;
int main()
{clrscr();
cout«”Enter a lette:”;
cin»letter;
if(isalnum(letter))
cout«letter«” is an alphabhet or a number. \n”;
else
cout«letter«” is not an alphabet nor a number. \n”;
if(isalpha(letter))
cout«letter«” is an alphabet \n”;
else
cout«letter«” is not an alphabet.\n”;
if(isdigit(letter))
cout«letter«” is a number. \n”;
else
cout«letter«” is not a number. \n”;
if(ispunct(letter))
cout«letter«” is a punctuation mark. \n”;
else
cout«letter«” is not a punctuation mark. \n”;
getch();
return 0;
}
