Thread: ASCII Parity

Hi

I need to create a program where a single character is entered, and then outputted as ASCII code in hexadecimal.

Each bit of the character needs to be examined so all the 1's can be counted. The parity bit most significant needs to be set to 1, if the number of odd bits is odd.

The 8 bit code then needs to be outputted in hexadecimal.

e.g. the output required needs to be or similar

C7=L Hex=4C

Can anyone point me in the right direction?

Thanks

Originally Posted by claudiu

What have you come up with so far?

Code:

#include <stdio.h>#include <ctype.h>
int ascii_value(char c);
void main()
{


 int i,a;
 char c;
 printf("Please enter a string.");
 for (i=0;(c=getchar())!=EOF;i++)
 {
  a=ascii_value(c);
  printf("%d%c",a,' ');
 }
 printf("are the ascii values of the characters of the entered string");
  }


 int ascii_value(char c)
 {
  int a;
  a=(int)c;
  return(a);
 }

This is so far, but the outputs seem strange. Any suggestions?

Thanks

getchar() returns an int, so don't try to store it in a char.
printf() has a way to print an int value as hex. %d isn't that way, but I bet you the correct format string would be listed in the docs for that function.
C can cast between different types without calling a function (but the solution to the first problem will eliminate the need for that altogether)

Bit manipulations are generally better done using unsigned values, once you get to that point.

Originally Posted by KCfromNC

getchar() returns an int, so don't try to store it in a char.
printf() has a way to print an int value as hex. %d isn't that way, but I bet you the correct format string would be listed in the docs for that function.
C can cast between different types without calling a function (but the solution to the first problem will eliminate the need for that altogether)

Bit manipulations are generally better done using unsigned values, once you get to that point.

Worked around the printf part, and replaced it with the nesesscary syntax for it to show a hexadecimal, however I think i'm required to do a more in depth check on the individual integers of the bit byte. Any suggestions?

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