Microchip Technology XC8 Standard Compiler (Workstation) SW006021-1 SW006021-1 User Manual
Product codes
SW006021-1
Library Functions
2012 Microchip Technology Inc.
DS52053B-page 339
See Also
toupper()
, tolower(), toascii()
ISDIG
Synopsis
#include <ctype.h>
int isdig (int c)
Description
The
isdig
() function tests the input character c to see if is a decimal digit (0 – 9) and
returns true is this is the case; false otherwise.
Example
#include <ctype.h>
void
main (void)
{
char buf[] = "1998a";
if(isdig(buf[0]))
printf(" type detected\n");
}
See Also
isdigit()
(listed under isalnum())
Return Value
Zero if the character is a decimal digit; a non-zero value otherwise.
ITOA
Synopsis
#include <stdlib.h>
char * itoa (char * buf, int val, int base)
Description
The function
itoa
converts the contents of
val
into a string which is stored into
buf
.
The conversion is performed according to the radix specified in
base
.
buf
is assumed
to reference a buffer which has sufficient space allocated to it.
Example
#include <stdlib.h>
#include <stdio.h>
void
main (void)
{
char buf[10];
itoa(buf, 1234, 16);
printf("The buffer holds %s\n", buf);
}
See Also
strtol()
, utoa(), ltoa(), ultoa()