C float与char数组 互转

1. //转换float数据到字节数组
   unsigned char i;
   float floatVariable;
   unsigned char charArray[];
   (unsigned char) *pdata = ((unsigned char)*)&floatVariable;  //把float类型的指针强制转换为unsigned char型
   for(i=;i<;i++)
   {
       charArray[i] = *pdata++;//把相应地址中的数据保存到unsigned char数组中
   }  
   
   //转换字节数组到float数据
   float   floatVariable;
   unsigned char  i;
   void   *pf;
   pf = &floatVariable;
   (unsigned char) * px = charArray;    
   
   for(i=;i<;i++)
   {
       *(((unsigned char)*)pf+i)=*(px+i);
   }