In the C library, the wprintf() and wscanf() functions are used for wide character output and input on the console.

Here we will see the wprintf() and wscanf() functions in C language. These are the printf() and scanf() functions for wide characters. These functions are located in wchar.h

wprintf() function is used to print wide characters to standard output. Wide string formats may contain format specifiers starting with the % symbol, which are replaced by the variable value passed to wprintf().

The syntax is as follows -

int wprintf (const wchar_t* format, ...);

The function adopts the following format. This format is a pointer to a null-terminated wide string that will be written to the console. It will contain wide characters and some format specifiers starting with %. Then (…) represents additional parameters. These are the data that will be printed, and they appear in order according to the format specifiers.

This function returns the number of characters printed. On failure, a negative value may be returned.

Example

#include <stdio.h>
#include <wchar.h>
main() {
   wint_t my_int = 10;
   wchar_t string[] = L"Hello World";
   wprintf(L"The my_int is: %d </p><p>", my_int);
   wprintf(L"The string is: %ls </p><p>", string);
}

Output

The my_int is: 10
The string is: Hello World

The wscanf() function is used to get data from the console and store them into appropriate variables. The additional parameters should point to allocated objects whose types are specified by the corresponding format specifiers in the format string.

Example

#include <stdio.h>
#include <wchar.h>
main() {
   wint_t my_int = 10;
   wprintf(L"Enter a number: ");
   wscanf(L"%d", &my_int);
   wprintf(L"The given integer is: %d </p><p>", my_int);
}

Output

Enter a number: 40
The given integer is: 40

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