wcstoull - C wchar.h

Type

function

From


<cwchar>
<wchar.h>

Description

Convert wide string to unsigned long long integer

Prototype

unsigned long long int wcstoull (const wchar_t* str, wchar_t** endptr, int base);

Parameters

Parameter	Description
str	C wide string
endptr	the next character in str after the numerical value.

Return Value

On success, the function returns the converted integral number as an unsigned long long int value.

For non valid conversion, a zero value is returned.

For out of range value, the function returns ULLONG_MAX defined in <climits>, and errno is set to ERANGE.

Demo Code


#include <wchar.h>

int main ()/*from  www .jav a2 s .c  om*/
{
  wchar_t wsNumbers[] = L"123123123 7b06af00 100101010101010101010110101010001100000 0x6fdead";
  wchar_t * pEnd;
  unsigned long long int ulli1, ulli2, ulli3, ulli4;

  ulli1 = wcstoull (wsNumbers,&pEnd,10);

  ulli2 = wcstoull (pEnd,&pEnd,16);

  ulli3 = wcstoull (pEnd,&pEnd,2);

  ulli4 = wcstoull (pEnd,NULL,0);

  wprintf (L"The decimal equivalents are: %llu, %llu, %llu and %llu.\n", ulli1, ulli2, ulli3, ulli4);

  return 0;
}