Char* parse error from char array - c

Question

I read a file and stock all characters like this:
void ReadFile()
{
int c;
FILE *file;
int string_size;
file = fopen("/userFiles/ex.txt", "r");
char * content;
if (file)
{
// Seek the last byte of the file
fseek(file, 0, SEEK_END);
// Offset from the first to the last byte, or in other words, filesize
string_size = ftell(file);
// go back to the start of the file
rewind(file);
// Allocate a string that can hold it all
content = malloc((string_size + 1) * sizeof(char));
int i = 0;
while ((c = getc(file)) != EOF)
{
//printf("%c",(char) c);
content[i] = (char) c;
i++;
}
content[string_size] = '\0';
printf("content: %s",content);
fclose(file);
}
else
{
printf("not load\n");
}
}
Problem is if i read each carachter i've got the content of the file but if i do:
printf("content: %s",content);
I got just a symbol and not text whereas i need to pass the content var with correct text in argument of a json reply.
This is the first line of the file (CRC32):
�ex.txt k��X� ?xml version="1.0" encoding="utf-8"?

Answer 1

I compiled and ran the following code and it shows no major problem when executed.
The compilable version I used is (cmdline: gcc main.c -Wall -Wextra -o main):
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int main(void)
{
int c;
FILE *file;
int string_size;
file = fopen("plop", "r");
char * content;
if (file == NULL)
{
perror("fprintf");
return 1;
}
// Seek the last byte of the file
fseek(file, 0, SEEK_END);
// Offset from the first to the last byte, or in other words, filesize
string_size = ftell(file);
// go back to the start of the file
rewind(file);
// Allocate a string that can hold it all
content = malloc((string_size + 1) * sizeof(char));
int i = 0;
while ((c = getc(file)) != EOF)
{
//printf("%c",(char) c);
content[i] = (char) c;
i++;
}
content[string_size] = '\0';
printf("content: %s", content);
return 0;
}
Maybe your file has a binary content?
What is the symbol printed, that you mentioned?

Answer 2

I think you should use quotes "" around the content string:
printf("content: \"%s\"",content);