C++ Program to Demonstrate Use of Output String Stream

This C++ program illustrates use of output string stream. The class template std::basic_ostringstream implements output operations on memory based streams. This is used to attach stream to a string, that is we can write to it using this stream.

Here is the source code of the C++ program which illustrates use of output string stream. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to illustrate use of output string stream

```
 */
```
```
#include <iostream>
```
```
#include <string>
```
```
#include <sstream>
```
```
using namespace std;
```
```
 
```

string compose(int n, int id[], int age[], string name[])

```
{
```
```
    ostringstream os;
```
```
 
```

    os << "Id   : " << id[n - 1] << endl

       << "Name : " << name[n - 1] << endl

       << "Age  : " << age[n - 1] << endl;

```
    return os.str();
```
```
}
```
```
 
```
```
int main()
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```
{
```
```
    int id[] = {1, 2, 3, 4, 5}, n;
```
```
    int age[] = {21, 23, 22, 21, 20};
```

    string name[] = {"Alice", "Bob", "Charles", "Danny", "Emily"};

```
 
```
```
    cout << "Enter id (1 - 5) : ";
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    cin >> n;
```
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    cout << "Details\n";
```
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    cout << compose(n, id, age, name);
```
```
}
```

$ a.out
Enter id (1 - 5) : 1
Details
Id   : 1
Name : Alice
Age  : 21

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