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Foreach in C++ and Java

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 Java have support for 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 demontrate 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.

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This article is attributed to GeeksforGeeks.org

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