Example
Input
Input any character: 3
Output
3 is digit
/**
* C program to check alphabet, digit or special character
*/
#include <stdio.h>
int main()
{
char ch;
/* Input character from user */
printf("Enter any character: ");
scanf("%c", &ch);
/* Alphabet check */
if((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
{
printf("'%c' is alphabet.", ch);
}
else if(ch >= '0' && ch <= '9')
{
printf("'%c' is digit.", ch);
}
else
{
printf("'%c' is special character.", ch);
}
return 0;
}
/*
Output :
Enter any character: a
'a' is alphabet.
*/
Program to check alphabet, digit or special character using ASCII value
/**
* C program to check alphabet, digit or special character using ASCII value
*/
#include <stdio.h>
int main()
{
char ch;
/* Input a character from user */
printf("Enter any character: ");
scanf("%c", &ch);
if((ch >= 97 && ch <= 122) || (ch >= 65 && ch <= 90))
{
printf("'%c' is alphabet.", ch);
}
else if(ch >= 48 && ch <= 57)
{
printf("'%c' is digit.", ch);
}
else
{
printf("'%c' is special character.", ch);
}
return 0;
}
/*
Output :
Enter any character: a
'a' is alphabet.
*/