erase() Function in C++

This C++ program demonstrates erase() function on vectors. The erase function takes iterators to the portion of the container(like list, vector, etc.) to be deleted, i.e. if you pass the iterator to beginning and end of the container, the function will empty that container.

Here is the source code of the C++ program demonstrates erase() function on vectors The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to Demonstrate erase() Function on Vectors

```
 */ 
```
```
#include <iostream>
```
```
#include <vector>
```
```
#include <algorithm>
```
```
#include <string>
```
```
 
```
```
template <class T>
```
```
void print(const std::vector <T>& v)
```
```
{
```

    typename std::vector <T>::const_iterator i;

    std::cout << "Vector v : " << std::endl;

    for(i = v.begin(); i != v.end(); i++)

```
    {
```

        std::cout << (i - v.begin() + 1)

                  << ". " << *i << std::endl;

```
    }
```
```
}
```
```
 
```
```
int main()
```
```
{
```
```
    std::vector <std::string> country;
```
```
    country.push_back("China");
```
```
    country.push_back("Germany");
```
```
    country.push_back("India");
```
```
    country.push_back("Pakistan");
```
```
    country.push_back("Russia");
```
```
    country.push_back("USA");
```
```
 
```
```
    print(country);
```

    country.erase(country.begin() + 2, country.end() - 2);

    std::cout << "After country.erase(country.begin() + 2,"

              << "country.end() - 2) " << std::endl;

```
    print(country);
```
```
}
```

$ a.out
Vector v :
1. China
2. Germany
3. India
4. Pakistan
5. Russia
6. USA
After country.erase(country.begin() + 2, country.end() - 2)
Vector v :
1. China
2. Germany
3. Russia
4. USA

Sanfoundry Global Education & Learning Series – 1000 C++ Programs.

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