Why can't I close the file - c

Question

I have a problem when I close the file fc.
Here is my code
#include <stdio.h>
#include <wchar.h>
int main()
{
FILE* fc = fopen("template.txt","rt,ccs=UTF-8");
wchar_t subStr[2300];
fread(subStr,sizeof(wchar_t),2300,fc);
wchar_t* scrStr=new wchar_t[2300];
wcscpy(scrStr,subStr);
fclose(fc);
return 0;
}

Answer 1

The file was probably not opened correctly in the first place. You must check that the 'handle' to the stream returned by fopen is not NULL. The following code checks the file 'handle', with a few bits changed to make it 'reasonable' C.
#include <stdio.h>
#include <wchar.h>
int main()
{
wchar_t* scrStr = NULL;
FILE* fc = fopen("template.txt","rt,ccs=UNICODE");
// Check that the file was opened.
if(NULL != fc)
{
wchar_t subStr[2301];
size_t wcharsRead = fread(subStr, sizeof wchar_t , 2300, fc);
fclose(fc);
// Check if anything was read.
if(0 != wcharsRead)
{
// Terminate the string in the temporary buffer.
subStr[wcharsRead] = `\0`;
// Allocate a smaller string (use new, if you're in C++).
if(scrStr = malloc(1 + sizeof wchar_t * wcharsRead), NULL != scrStr)
{
// Copy the useful bit into the new string.
wcscpy(scrStr, subStr);
}
}
}
else
{
// Do some error handling
printf("Unable to open file. Error code: %d\r\n",errno);
}
// Check if a string was read.
if(NULL != scrStr)
{
// Do something with scrStr
// Free the string once it's finished with (use delete if you're in C++).
free(scrStr);
}
return 0;
}