Command Prompt for Windows

atoui64, wtoui64, ttoui64

unsigned __int64 atoui64(char *number);
unsigned __int64 wtoui64(wchar_t *s);
unsigned __int64 ttoui64(TCHAR *s);

convert a string number to an unsigned 64 bit integer (Hexadecimal and Octal numbers are supported).

Parameter Description
number Address of a the character string containing the number to convert.


The unsigned 64 bit integer.


The function stops the conversion when the terminating NULL character is encounted or when an invalid character is encounted.

See Also