array-example

💻Example 4️⃣:

    #include <iostream>
    using namespace std;
    int main() {

        int marks[3];

        cout<<"Enter number 0: ";
        cin>>marks[0];

        cout<<"Enter number 1: ";
        cin>>marks[1];

        cout<<"Enter number 2: ";
        cin>>marks[2];

        cout<<"Number0 => "<<marks[0]<<endl;
        cout<<"Number1 => "<<marks[1]<<endl;
        cout<<"Number2 => "<<marks[2]<<endl;

        return 0;
    }

⚙️ Output :

Enter number 0: 5
Enter number 1: 10
Enter number 2: 15
Number0 => 5
Number1 => 10
Number2 => 15

💻Example 5️⃣:

    #include <iostream>
    using namespace std;
    int main() {

        int marks[3];

        for(int i=0; i<3; i++)
        {
        cout<<"Enter number"<<i<<": ";
        cin>>marks[i];
        }


        for(int i=0; i<3; i++){
           cout<<"Number"<<i<<" =>"<<marks[i]<<endl;
        }

        return 0;
    }

⚙️ Output :

Enter number 0: 5
Enter number 1: 10
Enter number 2: 15
Number0 => 5
Number1 => 10
Number2 => 15

💻Example 6️⃣:

    #include <iostream>
    using namespace std;
    int main() {

        int marks[5];

        for(int i=0; i<5; i++)
        {
        cout<<"Enter number"<<i<<": ";
        cin>>marks[i];
        }


        for(int i=0; i<5; i++){
           cout<<"Number"<<i<<" =>"<<marks[i]<<endl;
        }

        return 0;
    }

⚙️ Output :

Enter number 0: 5
Enter number 1: 10
Enter number 2: 15
Enter number 2: 20
Enter number 2: 25
Number0 => 5
Number1 => 10
Number2 => 15
Number3 => 20
Number4 => 25

Array Example

1. Write a program to calculate sum of elements present in array.

#include <iostream>
using namespace std;

int main() {

    int arr[5] = {5,4,1,9,7};

    int sum = 0;

    for(int i=0; i<5; i++)
    {
        sum = sum + arr[i];
    }

    cout<<"Sum = "<<sum;

    return 0;
}

2. Write a program to print only even numbers from given array

#include <iostream>
using namespace std;

int main() {

    int arr[8] = {5,4,1,9,7,6,12,3};

    for(int i=0; i<8; i++)
    {
        if(arr[i]%2==0)
        {
            cout<<arr[i]<<" , ";
        }
    }


    return 0;
}

3. Write a program to find largest element from array.

#include <iostream>
using namespace std;

int main() {

    int arr[5] = {5,7,81,2,23};

    int largest = 0;

    for(int i=1; i<5; i++)

    {
        if(arr[i] > largest)
        {
            largest = arr[i];
        }
    }

    cout<<"Largest Element is = "<<largest;

    return 0;
}