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What else can I help you with?
How do you access global variable from within the main function when the local variable is of the same name?
When you acess a global variable inside main function you must use the same name, because the variable declared as global can be accessed by any function/procedure on the class where it was defined.
How you can declare local variable?
variable exit within a function and curly braces is local variable int main() { int x; }
Explain the scope and visibility of variables in c plus plus function?
If you define a variable inside of your function, the variable can be referred and used only inside of that function. It means that you will not able to use the variable in another function (including main). Area of code where your variable can be used after declaration is usually called visibility of the variable.
What is pointer variable explaine?
If you mean example, then it is argv, which is the second parameter of function main.
What is the main function of an Ethernet external hard drive?
The main function of the Ethernet external hard drive is to connect the internet between the modem and the computer. To be able to connect internet, you need an Ethernet cable.
How do you make a variables from outside a function work in that function?
declaring a variable before main() will be accessed in main as well as in function which is called a "global variable" or "external variable". *edit* a very good programming practice, which is also necessary with some compilers, is to declare the variable inside the function as well with the extern declaration before the type declaration. for example if you had this inside a function: int func(){ int x = 0; x++; return x; } that would be fine, but to declare it externally, you should include extern inside the function int x = 0; int func(){ extern x; x++; return x; } assuming that we declared the variable globally, which we did.
What are its program components?
the main() function,the#include Directive, the variable definition. function prototype, program statements, the function definition,program comments and braces are the components of program in C++
Can you use main anywhere in the program?
No, for example it cannot be nested in:- another function definition- type-definition- variable-definitionBut, if you mean calling function main, you can do that without limits (not common practice, though).
What is the difference between local variable and global variable in Embedded C?
It's simple. A global variable has a scope through out out the C program. It can be accessed anywhere from any function or etc. A local variable on the other hand, is local to it's container only and can not be accessed outside of it's container. For example a function has variable sum then sum is only accessible within the function and not anywhere else.
What are the main parts of of a controlled experiment?
The main parts of a controlled experiment are the dependent variable and the independent variable. The dependent variable is what is measured in the experiment. The independent variable is the variable that is varied or manipulated by the researcher. The independent variable is the presumed cause, whereas the dependent variable is the presumed effect.
In c plus plus are local declarations visible to the function in a program?
If you declare a variable inside of any fuction (except main) it will not be available to other functions.
Why should a function or a variable be declared before its first use?
It is somewhat syntax of programming. But when program runs,device known as pre-processor process statements before main function. So when we use that function inside main function it will get idea and run directly without showing any error. So for compilers simplicity and fast execution purpose it is necessary to declare function before its use.
