Question

I want to output some wchar_t array filled from some windows api into a file opened with fopen:

wchar_t content[256];
SomeWindowsAPI(content, 256);
FILE *file;
file=fopen( "C:\\log","a+");
fputs(content , file); //????

However, fputs expects a const char* array. Is there some other C api to write to a file pipe that expects wide array characters?

Answer 1

For printing a null-terminated sequence, the wide analogue of fputs is fputws:

int fputws(const wchar_t *restrict ws, FILE *restrict stream);

As an alternative, you can write the raw data in your wide string with fwrite:

wchar_t str[] = L"Hello World";
FILE * fp = /* ... */;

fwrite(str, sizeof(wchar_t), wcslen(str), fp);