putwc() and fputwc() are similar in terms of functionality. However, a major difference between them is that putwc() can be implemented as a macro.
It is defined in <cwchar> header file.
putwc() prototype
wint_t putwc( wchar_t ch, FILE* stream );
The putwc() function takes a output file stream and a wide character ch as its arguments and writes wc to the file associated with stream.
putwc() Parameters
- ch: The wide character to be written.
- stream: The output file stream to write the wide character.
putwc() Return value
- On success, the putwc() function returns ch.
- On failure, it returns >WEOF. If an encoding error occurs, errno is set to EILSEQ.
Example: How putwc() function works?
#include <iostream>
#include <cwchar>
#include <cstdio>
#include <clocale>
using namespace std;
int main()
{
setlocale(LC_ALL, "en_US.UTF-8");
/* Devanagiri script */
wchar_t str[] = L"देवनागरि";
FILE *fp = fopen("file.txt","w");
if (fp)
{
for(int i=0; i<wcslen(str); i++)
putwc(str[i],fp);
}
else
perror("File opening failed");
fclose(fp);
return 0;
}
When you run the program, the following string will be written to file.txt:
देवनागरि
