Problem 47 T F A function may return a stru... [FREE SOLUTION]

Chapter 11: Problem 47

T F A function may return a structure.

Short Answer

Expert verified

Provide a brief reasoning and an example. Answer: True, a function may return a structure. Reasoning: In many programming languages, a structure (or struct) is a composite data type that groups variables under a single identifier. Functions can return data of any type, including structures. When a function returns a structure, it is returning an instance of that structure with its variables' values. Example (in C programming language): ```c #include // Declare the structure struct Point { int x, y; }; // Function that returns a Point structure struct Point createPoint(int x, int y) { struct Point pt; pt.x = x; pt.y = y; return pt; } int main() { struct Point p1 = createPoint(1, 2); printf("Point coordinates: (%d, %d)\n", p1.x, p1.y); return 0; } ``` In this example, we define a structure `Point` with two integer variables `x` and `y`. The function `createPoint` takes two integers as input and returns a `Point` structure with the values of `x` and `y`. In the main function, we call `createPoint` and assign the returned structure to `p1`, and then print the coordinates of the point.

Step by step solution

Answer

True, a function may return a structure.

Reasoning

In many programming languages, a structure (or struct) is a composite data type that groups variables under a single identifier. Functions can return data of any type, including structures. When a function returns a structure, it is returning an instance of that structure with its variables' values.

Example (in C programming language)

Here is an example of a function returning a structure: ```c #include // Declare the structure struct Point { int x, y; }; // Function that returns a Point structure struct Point createPoint(int x, int y) { struct Point pt; pt.x = x; pt.y = y; return pt; } int main() { struct Point p1 = createPoint(1, 2); printf("Point coordinates: (%d, %d)\n", p1.x, p1.y); return 0; } ``` In this example, we define a structure `Point` with two integer variables `x` and `y`. The function `createPoint` takes two integers as input and returns a `Point` structure with the values of `x` and `y`. In the main function, we call `createPoint` and assign the returned structure to `p1`, and then print the coordinates of the point.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

structure in C

In C programming, a structure is an essential concept used for grouping different data types under a single name. Imagine you want to store complex entities like a date or a point in a 2D plane. You can use structures to achieve this conveniently. By defining a structure, you create a custom data type that can represent multiple related values.

An example: Consider a structure to hold the coordinates of a point:

struct Point { int x, y; } 鈥� This structure groups two integers "x" and "y".

Using structures is a highly effective way to manage and solve problems involving multiple related parameters in C.

composite data type

Composite data types are those that can store multiple values under a single identifier. Unlike primitive data types like int, char, or float, composite data types can hold collections of variables.

In C, structures are a prime example of composite data types. They allow programmers to define containers for related variables. This is especially useful for representing things that need more than one attribute, like a person's name and age, or even more complex entities like a database record.

Structures in C act like a template to store data in a competitive way.
They enable you to logically organize related variables.

Utilizing composite data types can significantly improve the organization and readability of your code.

function in programming

Functions are the building blocks of any program. They encapsulate a set of instructions in a name which can be called whenever needed. This reduces repetition of code, making programs more efficient and easier to manage.

In C, as in other languages, functions can serve multiple purposes such as performing computations, handling inputs and outputs, or returning values. Functions can also be made to return structures, which adds to their versatility.

Functions in programming allow for modular and organized code.
They enable code reusability and reduce the potential for errors.

By breaking down processes into functions, developers can create more robust and maintainable software.

returning data type

The concept of returning data types from functions is a powerful feature. It enables a function to output a value or an object after it completes its execution.

In C programming, functions can return any data type, including primitive types like int or float, and even composite types like structures:

When returning a structure, a function effectively passes back an entire data class instance.
This is useful for extracting processed information from the function's computations.

Returning a structure from a function resembles setting a mode of communication, where a complete entity is passed back to the calling code, allowing for complex exchange of data.

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T F A function may return a structure.

Short Answer

Step by step solution

Answer

Reasoning

Example (in C programming language)

Key Concepts

structure in C

composite data type

function in programming

returning data type

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