How to print out an array c++

How do you print out an array?

In order to print integer array, all you need to do is call Arrays. toString(int array) method and pass your integer array to it. This method will take care of printing content of your integer array, as shown below. If you directly pass int array to System.

How do you display an array in C++?


  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. void print(const int &i) {
  5. std::cout << i << ‘ ‘;
  6. }
  7. // Print contents of an array in C++ using std::for_each.
  8. int main()

How do you print an array backwards in C++?

Algorithm to reverse an array

  1. First of all take number of elements as input from user. Let it be N.
  2. Then ask user to enter N numbers and store it in an array(lets call it inputArray).
  3. Declare another array of size equal to input array.
  4. Using a for loop, copy elements from inputArray to reverseArray in reverse order.

How do you print something in C++?

In C++, output to the display console is done via ” cout ” and the stream insertion (or put-to) operator << . You can print as many items as you wish to cout , by chaining the items with the << operator.

How do I print an array in reverse order?

Program to print the elements of an array in reverse order

  1. STEP 1: START.
  2. STEP 2: INITIALIZE arr[] = {1, 2, 3, 4, 5}
  3. STEP 3: PRINT “Original Array:”
  4. STEP 4: REPEAT STEP 5 for(i=0; i<arr.length ; i++)
  5. STEP 5: PRINT arr[i]
  6. STEP 6: PRINT “Array in reverse order”
  7. STEP 7: REPEAT STEP 8 for(i= arr.length-1; i>=0; i–)
  8. STEP 8: PRINT a[i]
See also:  How to sort an array c++

How do I print an array of elements in one line?

print(“The array: [ “); for(int i = 0; i< theArray. length; i++) { System. out. print(” ” + theArray[i] + ” “); } System.15 мая 2013 г.

What is an array in C++ with example?

We will learn to declare, initialize, and access array elements in C++ programming with the help of examples. In C++, an array is a variable that can store multiple values of the same type. For example, Suppose a class has 27 students, and we need to store the grades of all of them.

What is array with example?

An array is a collection of similar types of data. It is a container that holds data (values) of one single type. For example, you can create an array that can hold 100 values of int type.

How do you sort an array in C++?

first – is the index (pointer) of the first element in the range to be sorted. last – is the index (pointer) of the last element in the range to be sorted. For example, we want to sort elements of an array ‘arr’ from 1 to 10 position, we will use sort(arr, arr+10) and it will sort 10 elements in Ascending order.

How do you reverse the elements of an array?

Program to reverse an array

  1. // C program to reverse an array.
  2. #include<stdio.h>
  3. int main()
  4. {
  5. //fill the code;
  6. int n;
  7. scanf(“%d”,&n);

How do you reverse an array using recursion in C++?

The logic is simple, swap arr[start] with arr[end] then recursively call reverse for rest of the array.

If your array is initially 1 2 3 4 5 , here’s the sequence of swaps at each recursion step:

  1. swap 0 and 4 : 5 2 3 4 1.
  2. swap 0 and 3 : 4 2 3 5 1.
  3. swap 0 and 2 : 3 2 4 5 1.
  4. swap 0 and 1 : 2 3 4 5 1.
See also:  How to round up in c++

How do you reverse an array in place?

The first thing which comes in my mind is to loop through array and swap the elements of array e.g. swap first element with last element, swap second element with second last element until you reach the middle of the array. This way, all elements of array will be reversed without using any additional buffer.

Is C++ hard to learn?

C++ is the hardest language for students to master, mostly because they have to think much. Really much. … Many other popular languages provide some cool “features” allowing developers to concentrate on their actual problem, instead of worrying about language-specific quirks (agree, C++ has so many of them).

How do you print quotation marks in C++?

std::cout << “and he said “Hello”” will do it. (Basically if you need to print a special character, put a backslash in front of it.)

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