array.cpp

/* array*/
/*traversing an array*/
#include<iostream>
using namespace std;
int main(){
    int arr[5]={1,2,3,4,5};
    for(int i=0;i<5;i++){
        cout<<arr[i];
    }
    
    return 0;
}
/*to tell the size of array*/
#include<iostream>
using namespace std;
int main(){
    int arr[ ]={1,2,3,4,5};
    cout<<"size of an array element 1 is"<<sizeof(arr[0]);
    cout<<"size of the array is "<<sizeof(arr);
    int n;
    cout<<"number of elements in the array is"<<sizeof(arr)/sizeof(arr[0]);

    
    return 0;
}
/*array&pointer*/
#include<iostream>
using namespace std;
int main(){
    int arr[]={1,2,3,4,5};
    int *ptr=arr;
    cout<<"the address of the array is"<<ptr<<endl;
    cout<<"the address of the array is"<<&arr<<endl;
    return 0;
}

/*the adrress of thge array is 0x7ffd9d7a5510
    the address of the array is 0x7ffd9d7a5510*/

/*In the above code, we first define an array “arr” and then declare a pointer “ptr” and assign the array “arr” to it. We are able 
to assign arr to ptr because arr is also a pointer. After that, we print the memory address of arr using reference operator (&) and also print the address 
    stored in pointer ptr and we can see arr and ptr,*/
    both stores the same memory address.