Need help for school

[RiadC123]

Hi guys, I have started learning C++ in school, and we had exam today in informatics class. So my question is can this be done, we learned only if we know value in one side, not in both sides, then after exam she said when it's a = --b, if a=5 and b=3 result will be 5 + (3-1) = 7 ?? is that possible

	int a = 5;
	int b = 3;

	a = --b;

and

	int a = 5;
	int b = 3;

	a = b--;

[TarikNeaj]

int a = 5;
int b = 3;

a = --b;
cout << a << endl;

Outputs -

2

int c = 5;
int d = 3;

c = d--;
	
cout << c << endl;

Outputs -

3

[Texan40]

Perhaps she meant this?:

int a = 5;
int b = 3;

a += --b;
cout << a << endl;

Outputs -

7