%module example

%{
#define SWIG_FILE_WITH_INIT
#include <iostream>

void stdin_to_file()
{
    char buf[10];
    fscanf(stdin, "%s", buf);
    FILE *f = fopen("stdin.txt", "w");
    fprintf(f, "%s", buf);
    fclose(f);
}

void str_to_stdout()
{
    char buf[] = "foobar";
    fprintf(stdout, "%s", buf);
}

%}

%include <std_iostream.i>
void stdin_to_file();
void str_to_stdout();