Vector Elements using for_each() Algorithm in C++

This C++ program prints the elements of vector using for_each() algorithm. The program creates a vector, instantiates the value of elements using assign member function and prints the vector elements using for_each algorithm. The for_each function uses a predicate to print element by element as the iterator goes through the vector.

Here is the source code of the C++ program which prints the elements of vector using for_each() algorithm. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ program to print vector elements using for_each algorithm

```
 */
```
```
#include <iostream>
```
```
#include <algorithm>
```
```
#include <vector>
```
```
#include <iomanip>
```
```
using namespace std;
```
```
 
```
```
void print(int val)
```
```
{
```
```
    cout << setw(2) << setfill('0')
```
```
         << val << "  ";
```
```
}
```
```
 
```
```
int main()
```
```
{
```

    int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

```
    vector<int> v(10);
```
```
 
```
```
    // for_each to print
```
```
    cout << "Vector v : ";
```

    for_each(v.begin(), v.end(), print);

```
    cout << endl;
```

    v.assign(a, a + sizeof(a) / sizeof(int));

    cout << "Vector after assigning" << endl;

```
    cout << "Vector v : ";
```

    for_each(v.begin(), v.end(), print);

```
    cout << endl;
```
```
}
```

$ a.out
Vector v : 00  00  00  00  00  00  00  00  00  00  
Vector after assigning
Vector v : 01  02  03  04  05  06  07  08  09  10

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

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