Foreach in C++ and Java

1.6

Foreach loop is used to access elements of an array quickly without performing initialization, testing and increment/decrement. The working of foreach loops is to do something for every element rather than doing something n times.

There is no foreach loop in C, but both C++ and Jave support foreach type of loop. In C++, it was introduced in C++ 11 and Java in JDK 1.5.0

The keyword used for foreach loop is “for” in both C++ and Java.

C++ Program:

// C++ program to demonstrate use of foreach
#include <iostream>
using namespace std;

int main()
{
  int arr[] = {10, 20, 30, 40};

  // Printing elements of an array using
  // foreach loop
  for (int x : arr)
     cout << x << endl;
}

Output:

10
20
30
40

Java program

// Java program to demonstrate use of foreach
public class Main
{
    public static void main(String[] args)
    {
       // Declaring 1-D array with size 4
       int arr[] = {10, 20, 30, 40};

       // Printing elements of an array using
       // foreach loop
       for (int x : arr)
          System.out.println(x);
   }
}

Output:

10
20
30
40

Advantages of Foreach loop :-
1) Makes code more readable.
2) Eliminates the possibility of programming errors.

This article is contributed by Rahul Agrawal. If you like GeeksforGeeks and would like to contribute, you can also write an article and mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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