C++ program :How to take user input for integer array

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C++ program :How to take user input for integer array

In this article, we will discuss the concept of C++ program :How to take user input for integer array

In this post, we are going to learn how to write a program to input integer for integer array from user in C ++ language using for, while and do-while loop

Code to input integer of an array

Code to input integer for an array using for loop

In this code, we are going to learn how to input integer for an integer array using for loop in C++ language

Program 1

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
    int SIZE;
    int arr[SIZE];//Declare an array of SIZE
    int i,N;
    cout<<"Enter size of array\n";//Read size of the array
    cin>>N;

    cout<<"Enter "<<N<< "elements in the array\n";
    //Read elements of the array
    //Read elements of the array
    for(i=0; i<N; i++){
            cout<<"Enter arr["<<i<<"] element in the array: ";
        cin>>arr[i];
    }
    cout<<"\nEntered elements of an array\n";
    //print given elements of the array
    for(i=0; i<N; i++){
       cout<<arr[i];
       cout<<"\n";
    }
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Enter size of array
4

Enter 4 elements in the array
Enter arr[0] elements in the array: 234
Enter arr[1] elements in the array: 678
Enter arr[2] elements in the array: 765
Enter arr[3] elements in the array: 654

Entered elements of an array
234
678
765
654

Code to input integer for an array using while loop

In this code, we are going to learn how to input integer for an integer array using while loop in C++ language

Program 2

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
    int SIZE;
    int arr[SIZE];//Declare an array of MAX_SIZE
    int i,N;
    cout<<"Enter size of array\n";//Read size of the array
    cin>>N;

    cout<<"Enter "<<N<< " elements in the array\n";
    //Read elements of the array
    i=0;
    while(i<N){
            cout<<"Enter arr["<<i<<"] element in the array: ";
        cin>>arr[i];
        i++;
    }
    cout<<"\nEntered elements of an array\n";
    //print given elements of the array
    i=0;
    while(i<N){
       cout<<arr[i];
       cout<<"\n";
       i++;
    }
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Enter size of array
5

Enter 5 elements in the array is an
Enter arr[0] elements in the array: 4
Enter arr[1] elements in the array: 6
Enter arr[2] elements in the array: 8
Enter arr[3] elements in the array: 9
Enter arr[4] elements in the array: 5


Entered elements of an array
4
6
8
9
5

Code to input integer for an array using do-while loop

In this code, we are going to learn how to input integer for an integer array using do-while loop in C++ language

Program 3

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
    int SIZE;
    int arr[SIZE];//Declare an array of MAX_SIZE
    int i,N;
    cout<<"Enter size of array\n";//Read size of the array
    cin>>N;

    cout<<"Enter "<<N<< " elements in the array\n";
    //Read elements of the array
    i=0;
    do{
            cout<<"Enter arr["<<i<<"] element in the array: ";
        cin>>arr[i];
        i++;
    }while(i<N);
    cout<<"\nEntered elements of an array\n";
    //print given elements of the array
    i=0;
    do{
       cout<<arr[i];
       cout<<"\n";
       i++;
    }while(i<N);
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Enter size of array
3

Enter 3 elements in the array is an
Enter arr[0] elements in the array: 417
Enter arr[1] elements in the array: 826
Enter arr[2] elements in the array: 578

Entered elements of an array
417
826
578

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