The reading order of C + + function parameters

1#include <iostream>2#include <stdio.h>3 using namespacestd;4 voidBintAintb) {5cout << a <<" "<< b <<Endl;6 }7 voidA () {8     intI=0;9B (++i, i++);Tenprintf"%d\n", i); One } A intMain () { - A (); -}

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2,0

1 #include <cstdio>23int  main () {4     int Ten ; 5     printf ("%d%d%d\n", a++, + +A, a); 6     return 0 ; 7 }

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1. Before putting parameters into the stack, the compiler will first dispose of the arguments, even if they change the values of some of the parameters,

2. For the a++ operation, the compiler will open a buffer to hold the value of the current a, and then the a operation, when the value is taken from the buffer, rather than directly from a memory address to take.

Finally, verify the theory, a = ten, printf ("%d%d%d%d\n", a++, ++a, A, a++), the result should be: 12 13 13 10!

The reading order of C + + function parameters