C Programming Tutorial - A Few Cool Character Functions

1
computer doesn't care if it is character or a number it always convert everything into number.
Whenever you program in C programming you can change int and char interchangeably almost all the time.

#include<stdio.h>
#include<ctype.h> ( this gives us bunch of built in characters, make sure you have included this one)



int main() {
  int apple = 'b';
  if( isalpha(apple)) (it's going to return true if b is a letter) { 
      printf("%c is a letter", apple);
}
return 0 ;
}

2

#include<stdio.h>
#include<ctype.h>

int main() {
  int apple = '9';
  if( isalpha(apple)) { 
      printf("%c is a letter", apple);
}
else { 
    if( isdigit(apple)) { 
        printf("%c is a number", apple);
    } }
return 0 ;
}

3

#include<stdio.h>
#include<ctype.h>

int main() {
  int apple = '$';
  if( isalpha(apple)) { 
      printf("%c is a letter", apple);
}
else { 
    if( isdigit(apple)) { 
        printf("%c is a number", apple);
    }else { 
        printf("%c is a OMG WTF is that!? ", apple);
        }
}
        
return 0 ;
}