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bookPointers vs References

As I already mentioned, you can add to the pointer any number you want to go to the next storage unit. For example:


              
123456

            
int a = 1;
int *pa = &a;
cout << pa << endl;

pa++;
cout << pa;
copy

Pay attention that we moved forward to 4 bytes (size of the int type). Such math operation is unavailable for references:


              
123456

            
int a = 1;
int &ra = a;
cout << ra << endl;

ra++;
cout << ra;
copy

We changed the value of the variable a but not the reference.

question mark

What's the difference between a pointer and a reference?

Select the correct answer

Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 7

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bookPointers vs References

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As I already mentioned, you can add to the pointer any number you want to go to the next storage unit. For example:


              
123456

            
int a = 1;
int *pa = &a;
cout << pa << endl;

pa++;
cout << pa;
copy

Pay attention that we moved forward to 4 bytes (size of the int type). Such math operation is unavailable for references:


              
123456

            
int a = 1;
int &ra = a;
cout << ra << endl;

ra++;
cout << ra;
copy

We changed the value of the variable a but not the reference.

question mark

What's the difference between a pointer and a reference?

Select the correct answer

Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 7
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