problem with code

[D T]

I have a really simple code

include <iostream>

using namespace std;
int main()
{

int m = 44;
int p = &m;
int &r = m;
int n = (p)++;
int q = p -1;
r = (--p) + 1;
++ *q;
cout << m;
system("pause");
}

and i get the output

2291613

Can someone please explain why i get this output?

[D T]

thanks for the help

[Anonymous]

Perhaps I'm wrong but that seem home work at all.

int m = 44; // a integer initiated to 44
int p = &m; // pointer-to-int initiated with the address of m (p point-to-m)
int &r = m; // a reference (alias) to m
int n = (p)++; // a int inititated to unary increment of the deference of p = m++ = 45
int q = p -1; / a pointer-to-int initiated with...
Here is the trickery. here you decrease the value of the p pointer
and q points to some place undefined in your code. From this point
your code is trash.