fwrite一直失败，不确定为什么

if(fread(inputFloats, sizeof(float), LENGTH, binaryFile) < LENGTH)
{
   fprintf(stderr, \"Problem reading some or all data from %s\\n\\n\", binaryFileName);
   return EXIT_FAILURE;
}

#include <stdlib.h>
#include <stdio.h>
#define LENGTH 10

int main(void)
{
   FILE *binaryFile, *textFile;
   char *binaryFileName = \"floats.dat\", *textFileName = \"floats.txt\";
   float floats[LENGTH] = {3.2, 3.55, 6.9, 12.4, 14.332, 56.5, 4003.4, 456.4, 65.7, 83.4};
   float inputFloats[LENGTH];
   int i;

   if((binaryFile = fopen(binaryFileName, \"r+\")) == NULL)
   {
      fprintf(stderr, \"Problem opening %s\", binaryFileName);
   }

   if(fwrite(floats, sizeof(float), LENGTH, binaryFile) < LENGTH)
   {
      fprintf(stderr, \"Problem writing some or all data to %s\\n\", binaryFileName);
      return EXIT_FAILURE;
   }

   printf(\"DATA WRITTEN SUCCESSFULLY\\n\");

   if(fread(inputFloats, sizeof(float), LENGTH, binaryFile) < LENGTH)
   {
      fprintf(stderr, \"Problem reading some or all data from %s\\n\\n\", binaryFileName);
      return EXIT_FAILURE;
   }

   for(i = 0; i < LENGTH; i++)
   {
      printf(\"float[%d] = %f\\n\", i, floats[i]);
   }

   return EXIT_SUCCESS;
}