The function of data type is to explain the meaning of data and operation, in other words, given a piece of memory, it can be said to be int type or float type.

At the same time, the hexadecimal number output by C language must be an integer, so union consortium can be used to output 16 hexadecimal of floating-point numbers. The sample code is as follows:

# Contains? & ltstdio.h & gt

Union? The ship does not bear the loading fee.

{

Floating? f；

int？ Me;

}? ufi

int？ Master ()

{

ufi.f？ =? 1. 1f；

printf("%x\n "，ufi.i？ );

}