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How to find ASCII value of character in c

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How to find ASCII value of character in c

Jun 27th, 2008

Plz..guys i want to know is there any function that can give ASCII value of character? and do i need to use any header file to use that function

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Re: How to find ASCII value of character in c

Jun 27th, 2008

Here is sample code, which demonstrates on how to get a the ASCII code for the entered char.

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
#include <stdio.h>
 
#define TRUE      1
 
void clear_buffer( void )
{
     int ch;
 
     while( ( ch = getchar() ) != '\n' && ch != EOF );
} 
 
int main()
{
    unsigned int ch;
 
    while( TRUE )
    {
        printf("\nsingle char please - " ); 
        ch = getchar();
        clear_buffer();
 
        printf("%c - %d", ch, ch );
    } 
}    
 
/* my output
single char please - a
a - 97
single char please - s
s - 115
single char please - d
d - 100
single char please -
*/
#include <stdio.h>

#define TRUE      1

void clear_buffer( void )
{
     int ch;
     
     while( ( ch = getchar() ) != '\n' && ch != EOF );
} 

int main()
{
    unsigned int ch;
    
    while( TRUE )
    {
        printf("\nsingle char please - " ); 
        ch = getchar();
        clear_buffer();
           
        printf("%c - %d", ch, ch );
    } 
}    

/* my output
single char please - a
a - 97
single char please - s
s - 115
single char please - d
d - 100
single char please -
*/

NOTE: This is limitedto quite a lot of stuff. You coud place some error checking to make it more perfect.

And you can always find a ascii char chart on the net. Here is link for one which is found ASCII.

ssharish

Last edited by ssharish2005; Jun 27th, 2008 at 1:06 pm.

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Re: How to find ASCII value of character in c

Jun 27th, 2008

In C, you can use the char data type just like a number and it will automatically convert it to the ASCII value. Here's a minimal example:

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int myNum = 'a';

myNum would have the value 97 in it.

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Re: How to find ASCII value of character in c

Jun 28th, 2008

Thanks guys for replying to my query

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Re: How to find ASCII value of character in c

Jun 30th, 2008

remember this fact:

a variable of type char is just an 8-bit int.

thats all it is, and all it ever was.

try this and see:

int a = 65; printf("%c", a);

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Re: How to find ASCII value of character in c

Jul 9th, 2008

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
#include<stdio.h>
 
void main (void)
{
    char x; 
    printf("\nEnter a Character : ");
    x = getchar();
   printf("\nThe ASCII for Char is: %d",x);
 
 }
#include<stdio.h>

void main (void)
{
    char x; 
    printf("\nEnter a Character : ");
    x = getchar();
   printf("\nThe ASCII for Char is: %d",x);
  
 }

This will work , if you need values in Hex then use of "%x" is always there. : )

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Re: How to find ASCII value of character in c

Jul 9th, 2008

>void main (void)
This is not (and never has been) correct C. The main function returns int.

>a variable of type char is just an 8-bit int.
Just to be thorough, even though your reply is over a week old, char is only guaranteed to be at least eight bits.

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Re: How to find ASCII value of character in c

Jul 9th, 2008

•

Originally Posted by Narue

>void main (void)

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 C Syntax (Toggle Plain Text) 
#include<stdio.h>
int main ()
{
    char x; 
    printf("\nEnter a Character : ");
    x = getchar();
   printf("\nThe ASCII for Char is: %d",x);
   return 0;/*** was avoiding this line ****/
 }
#include<stdio.h>
int main ()
{
    char x; 
    printf("\nEnter a Character : ");
    x = getchar();
   printf("\nThe ASCII for Char is: %d",x);
   return 0;/*** was avoiding this line ****/
 }

Thanks anyway ; )

Last edited by Software guy; Jul 9th, 2008 at 12:19 pm.

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Re: How to find ASCII value of character in c

Jul 9th, 2008

•

Originally Posted by Software guy

Help with Code Tags

(Toggle Plain Text)
#include<stdio.h>
int main ()
{
    char x; 
    printf("\nEnter a Character : ");
    x = getchar();
   printf("\nThe ASCII for Char is: %d",x);
   return 0;/*** was avoiding this line ****/
 }
#include<stdio.h> int main () { char x; printf("\nEnter a Character : "); x = getchar(); printf("\nThe ASCII for Char is: %d",x); return 0;/*** was avoiding this line ****/ }

Since getchar returns an int , x should be an int . This is done to handle EOF .

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Re: How to find ASCII value of character in c

#10

Jul 9th, 2008

>return 0;/*** was avoiding this line ****/
Lazy? Seriously, do 8 characters of boilerplate really make enough of a difference to totally destroy the portability and correctness of your code?

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