C语言函数，作用为将整形转换为字符串 int--->char*

形转换为字符串 int--->char*

char*_itoa(intvalue,char*string,intradix);

参数说明:

value-----要转换的整形值

string-----转换后的字符串

radix------表示基数(2, 8, 10, 16)等进制基数

本函数与char * itoa(int, char *, int);相同

还有其他类似的转换函数

char *_i64toa(__int64value,char*string,intradix);

char*_ui64toa(unsigned_int64value,char*string,intradix);

wchar_t*_itow(intvalue,wchar_t*string,intradix);

wchar_t*_i64tow(__int64value,wchar_t*string,intradix);

wchar_t*_ui64tow(unsigned __int64value,wchar_t*string,intradix);

后三个为转换宽字符

eg:

#include <stdlib.h>

#include <stdio.h>

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\", i, buffer );

_itoa( i, buffer, 16 );

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

_itoa( i, buffer, 2 );

printf( "String of integer %d (radix 2): %s\", i, buffer );

_ltoa( l, buffer, 16 );

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

buffer );

_ultoa( ul, buffer, 16 );

printf( "String of unsigned long %lu (radix 16): 0x%s\", 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

说明:例题来自MSDN 2002