All Questions
Tagged with variable-initialization initialization
7 questions
2
votes
1
answer
131
views
What's the difference between Radio r = Radio("PSR", 100.8) and Radio("PSR", 100.8)? [duplicate]
I'm new to C++ and trying to understand something. I have this code in my main.cpp:
Radio r = Radio("PSR", 100.8);
or that code:
Radio r("PSR", 100.8);
Both seem to work and ...
- 35
2
votes
4
answers
1k
views
why is assigning values to int pointers different to that from char pointers?
int *p=123;
char *s="hi";
i tried searching this question on google but didn't get the exact answer.So, the question is why does the compiler throw error when we assign numbers in the place ...
- 37
1
vote
0
answers
46
views
Detailed Initialization Procedure class variable initializer
I saw many confusing answers about the following point :
Next, execute either the class variable initializers and static initializers of the class, or the field initializers of the interface, in ...
- 1,445
1
vote
1
answer
2k
views
error: request for member '..' in '..' , which is of non-class type [duplicate]
I use an STL priority_queue and give a custom comparator class whose constructor takes in the pointer to the vector that stores the priorities, thus -
#include <iostream>
#include <queue>...
- 85
4
votes
4
answers
659
views
Why C allows uninitialized local variables?
Looking into languages such as Java & C# use of uninitialized local variable is compile time error. Then why C & C++ allows uninitialized local variables? What is the reason that these ...
- 14.4k
77
votes
2
answers
13k
views
What are the differences between C-like, constructor, and uniform initialization?
To the best of my knowledge, there are three ways to initialize a variable in C++.
int x = 0; // C-like initialization
int x (0); // Constructor initialization
int x {0}; // Uniform ...
- 17k
3
votes
1
answer
249
views
Why can't I access a member of this class? [duplicate]
I have the following three class definitions:
class String
{
public:
String() {}
String(const char *) {}
};
class ClassA
{
public:
ClassA(const String &) {}
};
...
- 73.1k