Format
#include <stdlib.h>
char *_ltoa(long value, char *string, int radix);Language Level: Extension
Threadsafe: Yes.
Description
_ltoa converts the digits of the given long integer value to a character string that ends with a null character and stores the result in string. The radix argument specifies the base of value; it must be in the range 2 to 36. If radix equals 10 and value is negative, the first character of the stored string is the minus sign (-).
Return Value
_ltoa returns a pointer to string. There is no error return value.
When the string argument is NULL or the radix is outside the range 2 to 36, errno will be set to EINVAL.
Example that uses _ltoa()
This example converts the integer value -255L to a decimal, a binary, and a hex value, and stores its character representation in the array buffer.
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
char buffer[35];
char *p;
p = _ltoa(-255L, buffer, 10);
printf("The result of _ltoa(-255) with radix of 10 is %s\n", p);
p = _itoa(-255L, buffer, 2);
printf("The result of _ltoa(-255) with radix of 2\n is %s\n", p);
p = _itoa(-255L, buffer, 16);
printf("The result of _ltoa(-255) with radix of 16 is %s\n", p);
return 0;
}The output should be:
The result of _ltoa(-255) with radix of 10 is -255
The result of _ltoa(-255) with radix of 2
is 11111111111111111111111100000001
The result of _ltoa(-255) with radix of 16 is ffffff01Related Information: