initial commit

copy_file/cpp17.cpp

@@ -12,5 +12,6 @@ int main(int argc, char** argv)
 {
   assert(argc==2); /* argv[1] is the destination file */
   /* Your code here */
+  filesystem::copy(L"马Häst马.txt",argv[1]);
   return 0;
 }

copy_file/win32.c

@@ -5,5 +5,18 @@ int main(int argc, char **argv)
 {
   assert(argc==1);
   /* Your code here. */
+  char *str = "马Häst马.txt";
+  char *newfilename = "win32.txt";
+  
+  int wchar_length =  MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
+  wchar_t wchar_buffer[wchar_length];
+  MultiByteToWideChar(CP_UTF8, 0, str, -1, wchar_buffer, wchar_length);
+
+  int wchar_length2 =  MultiByteToWideChar(CP_UTF8, 0, newfilename, -1, NULL, 0);
+  wchar_t wchar_buffer2[wchar_length2];
+  MultiByteToWideChar(CP_UTF8, 0, newfilename, -1, wchar_buffer2, wchar_length2);
+  
+  CopyFileW(wchar_buffer, wchar_buffer2, FALSE);
+  
   return 0;
 }

part3.cpp

+#include <locale.h>
+#include <string>
+#include <iostream>
+#include <time.h>
+
+using namespace std;
+
+float foo(string str);
+void baz(float num);
+i
+
+int main () {
+
+  setlocale(LC_NUMERIC, "sv_SE.UTF8");
+  setlocale(LC_ALL, "sve_SE.UTF8");
+  string number("1.2345");
+  string  date("Fri Jul 5 05:04:02 2019");
+  float svNumber = foo(number);
+  baz(svNumber);
+ 
+  
+  
+  return 0;
+
+}
+
+float foo(string str){
+  locale::global(locale("en_US.UTF8"));
+ 
+   return stof(str);
+}
+
+void baz(float num){
+locale::global(locale("sv_SE.UTF8"));
+  cout.imbue(locale());
+   cout << num << endl;
+}
+  

unicode/unicode.c

@@ -15,9 +15,18 @@
 */
 FILE* my_fopen(char *str, char *mode)
 {
+  
 #if defined(_MSC_VER) || defined(__MINGW32__)
+  
+  int wchar_length =  MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
+  wchar_t wchar_buffer[wchar_length];
+  MultiByteToWideChar(CP_UTF8, 0, str, -1, wchar_buffer, wchar_length);
+
+  int wmode_length =  MultiByteToWideChar(CP_UTF8, 0, mode, -1, NULL, 0);
+  wchar_t wmode_buffer[wmode_length];
+  MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode_buffer, wmode_length);
   /* Hint: You want to modify this code */
-  return fopen(str, mode);
+  return _wfopen(wchar_buffer, wmode_buffer);
 #else
   /* Linux handles UTF-8 by default */
   return fopen(str, mode);

why.txt

+The filename has symbols from another language in it. These symbols are non-ASCII characters. Therefore we convert to a stream of widechar characters (that are 16-bits wide) instead and print those. The widechar range contain these characters.