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Anyone give explanation for structures and pointers in c++??

structure and pointer in c++

7th Aug 2017, 4:25 PM
Abhijith A
Abhijith A - avatar
2 Antworten
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A structure in C++ is the same as a class. C++ has two different names for this because structs were a thing in C and C++ wanted to be backwards-compatible. A small difference is that structs are public-by-default (again because of C), but you can of course override that like in any class. class X{ int foo; // this is private } struct X{ int foo; // this is public } Pointers are hard when you first learn about them, but it helps to imagine your computer's memory as a big, numbered list. Any variable you use lives somewhere in that list and therefor has a memory address. Pointers are just variables that hold memory addresses. int x = 4; int* pointer = &x; // int* means pointer to int, &x means, get the memory address of x. Let's say thismemory address is 1234. *pointer = 5; // That means, set whatever is behind memory address 1234 to 5. cout << x; // Prints 5, because "x" is at address 1234 and we just changed that To fully understand pointers you just have to read through some tutorials and test them out for a while, a comment on sololearn won't be enough :P
7th Aug 2017, 4:44 PM
Schindlabua
Schindlabua - avatar
0
Thanks buddy
7th Aug 2017, 4:51 PM
Abhijith A
Abhijith A - avatar