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itoa

Started by randomDecay Nov 12, 2001 at 9:27 PM 5 replies 600+ views

Original Post

Nov 12, 2001 at 9:27 PM

I understand how to use atoi, but what about itoa? Can someone give me a run-down on how to use it and the prototype and all that? thanks

Martee

Nov 12, 2001 at 9:31 PM

http://www.delorie.com/djgpp/doc/libc-2.02/libc_457.html

~~~~~~~~~~
"Usewhitespacetoenhancereadability" - Steve McConnell, Code Complete

EddieCai

Nov 12, 2001 at 9:46 PM

Example

/* ITOA.C: This program converts integers of various
* sizes to strings in various radixes.
*/

#include
#include

void main( void )
{
char buffer[20];
int i = 3445;
long l = -344115L;
unsigned long ul = 1234567890UL;

_itoa( i, buffer, 10 );
printf( "String of integer %d (radix 10): %s\n", i, buffer );
_itoa( i, buffer, 16 );
printf( "String of integer %d (radix 16): 0x%s\n", i, buffer );
_itoa( i, buffer, 2 );
printf( "String of integer %d (radix 2): %s\n", i, buffer );

_ltoa( l, buffer, 16 );
printf( "String of long int %ld (radix 16): 0x%s\n", l,
buffer );

_ultoa( ul, buffer, 16 );
printf( "String of unsigned long %lu (radix 16): 0x%s\n", ul,
buffer );
}

Output

String of integer 3445 (radix 10): 3445
String of integer 3445 (radix 16): 0xd75
String of integer 3445 (radix 2): 110101110101
String of long int -344115 (radix 16): 0xfffabfcd
String of unsigned long 1234567890 (radix 16): 0x499602d2