Declaration is the part of the subprogram (procedure or function) which provides the protocol(header), but not the body of the subprogram.
Questions tagged [declaration]
3407 questions
1
vote
0 answers
class declaration in exec inits class, but functions don't work
I am going to attach two blocks of code, the first is the main code that is ran the second is the testClass file containing a sample class for testing purposes. To understand what's going on it's probably easiest to run the code on your own. When I…
mizuprogrammer
- 225
- 3
- 10
1
vote
1 answer
Make struct accept any type insted of float
I'd need to modify a simple struct to accept multiple types of value parameters, as shown below:
struct menuitems_t
{
menuitems_t(std::string name, float* value = 0, int itemtype = menuitemtype::SWITCH)
{
this->name = name;
…
John
- 13
- 2
1
vote
1 answer
FreeRTOS static array declaration with a macro identifier
I am learning FreeRTOS from scratch. In order to do that,first, i start to investigate Task.c file.
In that file there are macros, functions and declarations.
But I am confused about the declaration meaning and i cant figure it out why?
In task.c…
Nazim
- 406
- 1
- 6
- 20
1
vote
6 answers
Why can I write some things out-of-order in python but not others?
Please have a look below:
a = 5
print a + b
b = 4
When I try to run the code above, it gives an error:
Traceback (most recent call last):
File "C:/Users/user/Documents/modules/ab.py", line 2, in
print a + b
NameError: name 'b' is not…
alwbtc
- 28,057
- 62
- 134
- 188
1
vote
4 answers
Good use cases for declaring enum type tags and variable names in C?
If you need some constants in your code you can declare them with enums:
enum {
DOG,
CAT,
FISH,
};
enum {
CAR,
BUS,
TRAIN,
};
and then use DOG, BUS, etc. as needed. But enums may be declared in a more verbose style as…
Theo d'Or
- 783
- 1
- 4
- 17
1
vote
1 answer
Losing some values while passing 3D array as a parameter C
I am writing a program where I am passing 3d array as a parameter to a function remove_red() but after the second row, the values in the array are being overwritten by some random numbers. This is the code:
void remove_red(int image[100][100][3],…
unitSphere
- 241
- 3
- 17
1
vote
1 answer
Class member function unable to access a private struct node of the same class?
I was working on a homework assignment and I stumbled upon a roadblock
I created a linked list class that looks something like this
List.h
class List{
struct Node{
string data
etc...
}
public:
Node* lastNode(Node*…
AlexDong11
- 11
- 1
1
vote
2 answers
Scope of using namespace versus using namespace closure
I'm trying to understand why there is ambiguity in my functions when I use using namespace versus explicitly declaring a namespace enclosure.
Book.h header file:
#ifndef MYBOOK_BOOK_H
#define MYBOOK_BOOK_H
namespace mybook
{
void showTitle();
…
S. Trahl
- 99
- 8
1
vote
2 answers
How to correctly declare/assign values for variables in c++
Should I declare variables at the top of my c++ program before assigning values:
int i;
std::string x;
std::string retval;
x = "foo";
i = 5;
retval = somefunction();
Or alternatively is it correct/acceptable to assign values to variables the…
asd plougry
- 143
- 1
- 9
1
vote
1 answer
How to access components created in Xamarin.Forms C# code behind?
So, I'm doing an app in Xamarin.Forms that creates some components and layouts when a button is clicked.
My problem is that I need to access these components afterwards so I can change the text in some labels, get values from editors and remove…
Biel Gonzalez Pibernat
- 53
- 3
- 7
1
vote
2 answers
Parse in and return 2D array
Trying to make a tic-tac-toe game and having trouble with the grid, I'm new to C and have looked everywhere but nothing seems to work.
int main(void) {
char grid[GRID_HEIGHT][GRID_WIDTH];
grid = make_grid((char **)grid);
print_grid((char…
aLongBoat
- 59
- 9
1
vote
2 answers
How can I resolve the "cout was not declared in this scope" error?
just a simple program but can anyone point out why this error is occuring, (i am using dev C++ version 5.11)
#include
#include
class animal
{
public :
void sound();
void eat() ;
};
void animal::eat()
{
…
M Desmond
- 113
- 1
- 3
1
vote
5 answers
RandomAccessFile cannot be found by compiler after being declared
The code below produces the following error when I try to compile it:
cannot find symbol
symbol : variable airplanesFile
The error is produced by the last statement.
Why can the RandomAccessFile object not be found after it's…
mg11
- 11
- 1
1
vote
4 answers
Regex for variable declaration and initialization in c#
I want to write a RegEx to pull out all the variable values and their names from the variable declaration statement. Say i have
int i,k = 10,l=0
i want to write a regex something like int\s^,?|(^,?)*
but this will also accept
k = 10 i.e. (without…
Anirudh Goel
- 4,571
- 19
- 79
- 109
1
vote
1 answer
Difference between wrapping a value and explicitly declaring value as a type in Swift
I came across a heterogeneous dictionary definition like this on a tutorial online:
var mixedMap4 = [AnyHashable(0): "Zero" as Any,
AnyHashable(1): 1.0 as Any,
AnyHashable("pi"): 3.14 as Any]
I was wondering why…
tiw
- 535
- 1
- 6
- 22