C in a Nutshell (In a Nutshell (OReilly))

Reads in formatted data from a wide-character string

#include <wchar.h> int swscanf ( const wchar_t * restrict wcs , const wchar_t * restrict format , ... );

The swscanf( ) function is similar to wscanf( ), except that it reads its input from the wide-character string addressed by the first argument, wcs, rather than from stdin. If swscanf( ) reads to the end of the string, it returns the value EOF.

Example

double price = 0.0; wchar_t wstr[ ] = L"Current price: $199.90"; swscanf( wstr, L"%*[^$]$%lf", &price); // Read price from string. price *= 0.8; // Apply 20% discount. printf( "New price: $%.2lf\n", price);

This code produces the following output:

New price: $159.92

See Also

wscanf( ), fwscanf( ); wcstod( ), wcstol( ), and wcstoul( ); scanf( ), fscanf( ); fwprintf( ), wprintf( ), vfwprintf( ), and vwprintf( ); the example at wcsspn( ) in this chapter.