C++ Program to Demonstrate Use of Formatting Flags on Integer Output

This C++ program demonstrates the use of formatting flags on integer output. The formatting flags provided in the header ios_base helps to format the integer output. The integer output can be either in decimal, octal or hexadecimal format.

Here is the source code of the C++ program which demonstrates the use of formatting flags on integer output. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to Demonstrate Use of Formatting Flags on Integer Output

```
 */
```
```
#include <iostream>
```
```
using namespace std;
```
```
 
```
```
int main()
```
```
{
```
```
    int data;
```
```
    ios_base::fmtflags old;
```
```
 
```
```
    cout << "Enter a number  : ";
```
```
    cin >> data;
```
```
    old = cout.flags();
```

    cout.setf(ios_base::oct, ios_base::basefield);

    cout << "\nOctal format    : " << data << endl;

    cout.setf(ios_base::hex, ios_base::basefield);

    cout << "Hexa-dec format : " << data << endl;

    cout.setf(old, ios_base::basefield);

    cout << "Default format  : " << data << endl;

```
}
```

$ a.out
Enter a number  : 32
 
Octal format    : 40
Hexa-dec format : 20
Default format  : 32

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