main.c

#include <stdio.h>
#include <xboxkrnl/xboxkrnl.h>
#include <assert.h>
#include <string.h>

int main() {
   FILE *fp;

   fp = fopen("D:\\test.txt", "w");
   assert(fp != NULL);
   fprintf(fp, "This is testing for fprintf...\n");
   fputs("This is testing for fputs...\n", fp);
   fclose(fp);

   fp = fopen("D:\\test.txt", "a");
   assert(fp != NULL);
   fprintf(fp, "Testing appending (%d)\n", 123);
   fclose(fp);


   fp = fopen("D:\\test.txt", "rb");
   assert(fp != NULL);
   char buf[256];
   size_t read;
   read = fread(buf, 1, 255, fp);
   buf[read] = '\0';
   fclose(fp);
   assert(strcmp(buf, "This is testing for fprintf...\nThis is testing for fputs...\nTesting appending (123)\n") == 0);
   DbgPrint("Read content: %s\n", buf);

   fp = fopen("D:\\nonexistent.txt", "r");
   assert(fp == NULL);

   fp = fopen("D:\\nonexistent.txt", "rb");
   assert(fp == NULL);

   fp = fopen("D:\\test.txt", "r");
   assert(ftell(fp) == 0);
   fseek(fp, 1, SEEK_SET);
   assert(ftell(fp) == 1);
   fseek(fp, 2, SEEK_CUR);
   assert(ftell(fp) == 3);
   fseek(fp, 0, SEEK_END);
   assert(ftell(fp) == 84);
   fclose(fp);

   DbgPrint("Everything's fine\n");

   return 0;
}