把一个2进制浮点数据101011.01011110011101 转成十进制后,寸到文件中, 对生成的double型数据如何存到文件中，　　char binaryNUM[]=101011.01011110011101 和 int a[] =decimalNum ;有错误，求高手帮改改


#include <stdio.h>
#include <math.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>

  int main(void)
{

   char binaryNUM[]=101011.01011110011101 ;
   char *P=binaryNUM;
   double decimalNum = 0;
   int n = 0, dotsNum = 0, i = 0, j = 0;
   if (dotsNum)                           /******
     j = n -1 - i;                         ******
   else                                    数据处理部分
    i = n;                                 (将二进制浮点数进行处理生成十进制的数据)
   for ( ; i > 0; p++, i--)                ******
  if (*p == '1')                           ******
    decimalNum += pow(2, i -1);            ******
   for (p++, i = 1; i <= j; p++, i++)      ******
   if (*p == '1')                          ******
     decimalNum += pow(2, -i);             ******/


  FILE *fp;
    int num;
    int folder;
    int a[] =decimalNum ;
   
    fp = fopen("/tmp/sd/linux.txt","w+");    /*打开SD卡上的TXT文件.*/
    if(fp == NULL)
    {
        printf("\nCan't open linux.txt!\n");
        exit(-1);
    }

    num = fwrite(a, sizeof(a), 1, fp);  /*将生成的十进制数据写TXT文件中*/
    printf("%d byte data has written to linux.txt\n", num*sizeof(a));

    folder = mkdir("/tmp/sd/linux", 1);
    if(folder == -1)
    {
        printf("\n Cann't create folder linux!\nIt has existed or the path is error!\n");
        exit(-1);
    }
    printf("Folder linux created success!\n");

    close(fp);  /*关闭TXT文件*/
    return 0;   /*返回*/
}

[[it] 本帖最后由 lansha001 于 2008-4-29 13:52 编辑 [/it]]