四字节与float转换

/////////char  to  float

     char sBuf[4];

     sBuf[0]=0x00;

     sBuf[1]=0x00;

     sBuf[2]=0x48;

     sBuf[3]=0x42;

     float a= *(float*)(sBuf);

///////// float to char

     float wTemp=50;

      char sBuf1[4];

      char* temp;

      memset(sBuf1,0,sizeof(sBuf1));

      temp=(char*)(&wTemp);

      sBuf1[0] = temp[0] ;

      sBuf1[1] = temp[1];

      sBuf1[2] = temp[2];

      sBuf1[3] = temp[3];