### Output All Combinations of Character VariablesIn this exercise, you are required to output all combinations of the character variables `a`, `b`, and `c` in the order shown below. After the final output, end with a newline. If `a = 'x'`, `b = 'y'`, and `c = 'z'`, then the output is:```xyz xzy yxz yzx zxy zyx```#### Note:Our autograder automatically runs your program several times, trying different input values each time to ensure your program works for any values. This program is tested three times, first with the inputs `x y z`, then with the inputs `# $ %`, and finally with the inputs `1 2 3`.See [How to Use zyBooks](#) for info on how our automated program grader works.### Sample Code:```cpp#include using namespace std;int main() { char a; char b; char c; cin >> a; cin >> b; cin >> c; // Output all permutations of a, b, and c cout << a << b << c << " "; cout << a << c << b << " "; cout << b << a << c << " "; cout << b << c << a << " "; cout << c << a << b << " "; cout << c << b << a << " "; cout << endl; return 0;}```### Explanation:1. **Include Header** ```cpp #include ``` Including the necessary library for input-output stream operations.2. **Namespace Declaration** ```cpp using namespace std; ``` Declaring the standard namespace for convenience.3. **Main Function** ```cpp int main() { char a; char b; char c; cin >> a; cin >> b; cin >> c; // Output all permutations of a, b, and c cout << a << b << c << " "; cout << a << c << b << " "; cout << b << a << c << " "; cout << b << c << a << " "; cout << c << a << b << " "; cout << c << b << a <<

C++:C++ is a general purpose, high level language. It is an extension of C language. It was…

Output all combinations of character variables a, b, and c, in the order shown below. After the final output, end with a newline. If a = 'x', b = 'y', and c = 'z', then the output is: xyz xzy yxz yzx zxy zyx

Output all combinations of character variables a, b, and c, in the order shown below. After the final output, end with a newline. If a = 'x', b = 'y', and c = 'z', then the output is: xyz xzy yxz yzx zxy zyx

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.

Question

### Output All Combinations of Character Variables

In this exercise, you are required to output all combinations of the character variables `a`, `b`, and `c` in the order shown below. After the final output, end with a newline. If `a = 'x'`, `b = 'y'`, and `c = 'z'`, then the output is:
```
xyz xzy yxz yzx zxy zyx
```

#### Note:
Our autograder automatically runs your program several times, trying different input values each time to ensure your program works for any values. This program is tested three times, first with the inputs `x y z`, then with the inputs `# $ %`, and finally with the inputs `1 2 3`.

See [How to Use zyBooks](#) for info on how our automated program grader works.

### Sample Code:

```cpp
#include <iostream>
using namespace std;

int main() {
char a;
char b;
char c;

cin >> a;
cin >> b;
cin >> c;

// Output all permutations of a, b, and c
cout << a << b << c << " ";
cout << a << c << b << " ";
cout << b << a << c << " ";
cout << b << c << a << " ";
cout << c << a << b << " ";
cout << c << b << a << " ";

cout << endl;
return 0;
}
```

### Explanation:

1. **Include Header**
```cpp
#include <iostream>
```
Including the necessary library for input-output stream operations.

2. **Namespace Declaration**
```cpp
using namespace std;
```
Declaring the standard namespace for convenience.

3. **Main Function**
```cpp
int main() {
char a;
char b;
char c;

cin >> a;
cin >> b;
cin >> c;

// Output all permutations of a, b, and c
cout << a << b << c << " ";
cout << a << c << b << " ";
cout << b << a << c << " ";
cout << b << c << a << " ";
cout << c << a << b << " ";
cout << c << b << a <<

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