Functions in C++ - Reading Assignment

[johal]

1. What is a function? A function is a method that contains statements or syntax that does something. A function can be called at any time and it can also be called from various locations in your program. It does not have to pass back a result value and it may have inputs or it may not have inputs. For example, a function can be written that takes a birth date as an input value, calculates the retirement date and then returns the calculated ‘date of retirement’ value.

The author defined a function as a reusable sequence of statements designed to do a particle job. Functions allow the program to be split into chunks, making it easier to read.

2. What function is run first of all in a C++ program? Function int main()
3. What are return values?

A return value is the result passed back from the function. It can be any data type that you configure the function to return.

The return value can be a string, int, double, or a pointer to an array.

The return value is the pointer to the value being returned from the called function.

The void keyword at the beginning of the function indicates that the function should not return a value.

4. Are nested functions allowed in C++? No. Instead this is accomplished via function calls. A function will pause or suspend while the called function is running. Once the called function completes, the ‘caller’ function continues to run sequentially.

[CryptoVic]

1. What is a function? A function is a reusable sequence of statements designed to do a particular job.

2.What function is run first of all in a C++ program? Main()

3. What are return values? The specific values returned from a function. Return values provide a way for functions to return a single value back to the functions caller.

4. Are nested functions allowed in C++? No. Nesting, or a function inside another function, is not supported.

[Say10]

1. A function is a reusable sequence of statements designed to do a particular job.
2. int main()
3. The value which is returned by function.
4. Nested functions are not allowed in C++.

[Rafael21]

1. What is a function?
   A function is a series of statements that are executed when the function is called.

2. What function is run first of all in a C++ program?
   The main() function.

3. What are return values?
   These are the values returned by the function at the end of execution. Some functions do not return any values, however.

4. Are nested functions allowed in C++?
   No, functions have to be defined outside the body of any other function.

[TommyAces]

1. What is a function?
A reusable sequence of statements designed to do a specific job
2. What function is run first of all in a C++ program?
int main()
3. What are return values?
returns value to a function
4. Are nested functions allowed in C++?
No

[DeezSats]

1. What is a function?
   A sequence of statements designed to perform a specific task when called upon. There are libraries of standard functions available. A special function created is called a user defined function.

2. What function is run first of all in a C++ program?
   Main()

3. What are return values?
   When a function is called it executes a statement. The value returned from the statement is called the return value.

4. Are nested functions allowed in C++?
   No! Functions can call other functions in C++ but any functions created must be outside of the main function.

[Ernest_SG]

1. What is a function?

A function is a reusable sequence of statements designed to do a particular job.

2. What function is run first of all in a C++ program?

int main () {

// insert code here ...

return 0;
}

3. What are return values?

Return values are the values that the function will return once the code block has been run.

4. Are nested functions allowed in C++?

NO, they are not. One must define the function prior of calling the int main() function, and outside any other function. Although one can call a function inside another.

[Lucena7]

1. Function is a sequence of code that can be called several times to carry out some kind of operation, with or without return.
2. The first function to be run is function main(), place at end of user-defined functions created by the programmer.
3. Return values are the result of calling a function. If function is void(), then return is null.
4. No, nested functions are not allowed.

[alex.k]

1. What is a function?
   A function is a reusable sequence of statements designed to do a particular job;

2. What function is run first of all in a C++ program?
   The main() function;

3. What are return values?
   The value a function returns if executed, is called a return value;

4. Are nested functions allowed in C++?
   No nested functions are not allowed in C++;

[Ipitos]

@ivan

• What is a function?
• What function is run first of all in a C++ program?
• What are return values?
• Are nested functions allowed in C++?

• Sequence of statements that you can use again faster.
• main(){}
• Value that returns when you call a function
• No, you need to define functions outside another functions

[Ibrahim_Moufawad1]

1.What is a function?
A function is a block of code which only runs when it is called.
2.What function is run first of all in a C++ program?
Main function run first
3.What are return values?
The specific value returned from a function is called the return value.
4.Are nested functions allowed in C++?
no it is not allowed, C++ has nested classes, but not nested functions.

[Crista]

1. A function is a reusable sequence of statements designed to do a particular job.
2. The main function is first in a C++ program.
3. The actual value returned from a function is the return value.
4. Nested functions are not allowed in C++

[jonsax]

@ivan

• What is a function?
• What function is run first of all in a C++ program?
• What are return values?
• Are nested functions allowed in C++?

a function is a mini program that performs a task intended by the programmer

int main();

a return value is any value that is intentionally returned (outputted) from a function. functions of type “void” do not have any return value and simply “do” a thing the programmer wants.

Nested functions are not allowed. All functions must be declared inividually. However a function may call another function that has already been defined. But a function cannot be defined inside another function.

[greentree]

1. A section of code for a specific purpose. Usually separated from the main code body for clarity or repeated use.
2. main()
3. string, int, float, double, boolean.
4. No.

[BobN]

• What is a function?

A function is a reusable sequence of statements designed to do a particular job.

• What function is run first of all in a C++ program?

int main()

• What are return values?

The specific value(s) returned from a function is called the return value.

• Are nested functions allowed in C++?

No, they are not

[Alko89]

@greentree

string, int, float, double, boolean.

You can return complex objects like a class, struct or array

[Matoshi]

1. Function is a collection of statements designed to perform specific task and could be reused in program.
2. int main ()
3. It is a specific value returned to the caller from a function.
4. No, all functions should be declared above the main function. One function could be called in other function, but not declared in one.

[Uyan]

1. A function is a sequence of statements that execute a specific task. The benefits of creating your own function - called a user-defined function - is that it can be called to be used repeatedly, and it allows code to take a modular form where each section can be monitored, updated and bug fixed separately.

2. In all C++ programs, the first program to be run is main.

3. Return values are specific values returned (outputted) from functions to the caller.

4. Nested functions (e.g. f(g(x)) are not allowed in C++. Instead we would write (in C++ syntax):
   f(x) = [insert function here]
   g(x) = [insert function here] = h
   f(h)

[JustG]

1. What is a function?
   A function is a reusable sequence of statements designed to do a particular job.

2. What function is run first of all in a C++ program?
   The main() function.

3. What are return values?
   The specific value returned from a function is called the return value. When the return statement is executed, the return value is copied from the function back to the caller. This process is called return by value.

4. Are nested functions allowed in C++?
   No, nested functions are not allowed in C++.

[Rolf]

1. What is a function?
   A function is a reusable sequence of statements designed to do a particular job.

2. What function is run first of all in a C++ program?
   The ‘main’ function.

3. What are return values?
   A specific value that is output (returned) to the caller of a function.

4. Are nested functions allowed in C++?
   No.