Copying file pointer into array - c

Question

Here, I am trying to read from a text file, copy this file into an array, then I want to write the array to another text file. This is not copying into the array at all. I am just getting blank values when I print.
int main(void)
{
char char_array[50];
char copied_array[50];
//int n = 2;
FILE* fpointer = fopen("hello_world.txt", "r");
FILE* fpointer2 = fopen("copyhello.txt", "w");
for(int i = 0;i < 50; i++)
{
fread(&char_array, sizeof(char), 1, fpointer);
copied_array[i] = char_array[i];
}
for(int j = 0;j < 50; j++)
{
printf("char_array: %c\n", copied_array[j]);
}
fclose(fpointer);
fclose(fpointer2);
}

Answer 1

working code. hope this becomes clearer :)
Note you're using fread/fwrite - compare with fgets/fputs for strings.
#include "stdio.h"
#include "string.h"
#define BUFSIZE 50
// memory size 'plus one' to leave room for a string-terminating '\0'
#define BUFMEMSIZE (BUFSIZE+1)
const char *file1 = "hello_world.txt";
const char *file2 = "copyhello.txt";
int main(void)
{
char char_array[BUFMEMSIZE];
char copied_array[BUFMEMSIZE];
FILE *fInput, *fOutput;
fInput = fopen(file1, "r");
if(fInput != NULL)
{
fOutput = fopen(file2, "w");
if(fOutput != NULL)
{
// make sure memory is wiped before use
memset(char_array, 0, BUFMEMSIZE);
memset(copied_array, 0, BUFMEMSIZE);
size_t lastSuccessfulRead = 0;
// the read-then-loop pattern: try and read 50 chars
size_t bytesRead = fread(char_array, sizeof(char), BUFSIZE, fInput);
while(bytesRead != 0)
{
// we got at least 1 char ..
// (to be used at end - so we know where in char_array is the last byte read)
lastSuccessfulRead = bytesRead;
// 'bytesRead' bytes were read : copy to other array
strncpy(copied_array, char_array, bytesRead);
// write to output file, number of bytes read
fwrite(copied_array, sizeof(char), bytesRead, fOutput);
// read more, and loop, see if we got any more chars
bytesRead = fread(char_array, sizeof(char), BUFSIZE, fInput);
}
// set char after the last-read-in char to null, as a string-terminator.
char_array[lastSuccessfulRead] = '\0';
// an array of chars is also a 'string'
printf("char_array: %s\n", char_array);
fclose(fOutput);
}
else printf("cant open %s\n", file2);
fclose(fInput);
}
else printf("cant open %s\n", file1);
}