6.23.8 fgetws Function

Obtains wide string input from a stream.

Include

<wchar.h>

Prototype

wchar_t * fgetws(wchar_t * restrict s, int n, FILE * stream);

Arguments

s

the wide array in which to store the string

n

the maximum number of bytes written to the array

stream

the stream to read input from

Return Value

After a successful read, the function returns s. If end-of-file is encountered and no characters have been read into the array, the the array is not modified and a null pointer is returned. If a read or encoding error occurs during the operation, the array contents are indeterminate and a null pointer is returned.

Remarks

This function reads no more than n-1 wide characters from the stream, terminating once encountering a new-line wide character or and end-of-file. A null wide character is written to the array after those wide characters read from the stream.

Example

#include <wchar.h>
#include <stdio.h>

int main(void)
{
  FILE * myfile;
  wint_t ws[30];

  if ((myfile = fopen("afile", "r")) == NULL)
    wprintf(L"Cannot open afile\n");
  else
  {
    if(fgetws(ws, 30, myfile) == NULL)
      wprintf(L"String read returned error\n");
    else
      wprintf(L"Your string: %ls\n", ws);
    fclose(myfile);
  }
}

Example Input

Content of afile.

Four and 20

Example Output

Your string: Four and 20