Format
#include <stdlib.h> char *_itoa(int value, char * string, int radix);
Language Level: Extension
_itoa converts the digits of the given 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 (-).
Note: The space reserved for string must be large enough to hold the returned string. The function can return up to 33 bytes including the null character (\0).
Return Value
_itoa returns a pointer to string. There
is no error return value.
Example
This example converts the integer value
-255 to a decimal, a binary, and a hex number, storing its
character representation in the array buffer.
#include <stdio.h> #include <stdlib.h>
int main(void)
{
char buffer[35];
char *p;
p = _itoa(-255, buffer, 10);
printf("The result of _itoa(-255) with radix of 10 is %s\n", p);
p = _itoa(-255, buffer, 2);
printf("The result of _itoa(-255) with radix of 2\n is %s\n", p);
p = _itoa(-255, buffer, 16);
printf("The result of _itoa(-255) with radix of 16 is %s\n", p);
return 0;
/***************************************************************
The output should be:
The result of _itoa(-255) with radix of 10 is -255
The result of _itoa(-255) with radix of 2
is 11111111111111111111111100000001
The result of _itoa(-255) with radix of 16 is ffffff01
***************************************************************/
}
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_ecvt -- Convert
Floating-Point to Character
_fcvt -- Convert
Floating-Point to String
_gcvt --
Convert Floating-Point to String
_ltoa --
Convert Long Integer to String
_ultoa -- Convert
Unsigned Long Integer to String
<stdlib.h>