字符串转换问题?

[Sylix]

转换将一个64位的整型数字转换成字符串?

[luckysky]

直接用sprintf好了
char str[30];
int num;
sprintf(str, "%d", num);

[zengpan_panpan]

64位的，要用sprintf(str, "%lld", num);

[dddd8888]

char * _ui64toa( unsigned _int64 value, char *string, int radix );
MSDN上有

[missOY]

OK!

[Sylix]

thanks, linux呢?

[RedSunRS]

/*function: change an unsigned 64 bits integer to a string
*value: the source unsigned 64 bits integer
*string:the destination string, it should be large enough ,
* or else maybe cause memory exception
*radix:maybe 2, 8, 16
*/
BOOL changeint64tostring( unsigned __int64 value, char* string, int radix)
{
int temp = 0;
int i;
*string = 0;
for( i = 0; i < 64; i++ ) {
if( (value/=power(radix,i)) <= 0 )
break;
temp = value % radix;
if( temp >= 10 )
string[i] = 'A' + temp - 10;
else
string[i] = '0' + temp;

}
int count = i--;

if( i < 0 )
return FALSE;
int j;
for( j = count / 2; j >= 0; j-- ) {
char temp = string[j];
string[j] = string[i-j];
}
string[count] = 0;
return TRUE;
}