<span>When studying an information system, illustrations of actual documents should be collected using a process called sampling. Correct answer: D
</span>This process systematically selects representative elements of a population with the goal to get representative and useful information about the population as a whole and it is useful when <span>data sets that are too large to efficiently analyze in full.</span>
Answer:
#include <iostream>//including libraries
using namespace std;
int main()
{
int arr[6] = { 0,1,2,3,4,5 };//make sure size of arr is 1 less than secArr
int secArr[7];//second array (1 element bigger)
for (int i = 0;i < 6;i++)//looping through each element (6 times)
{
secArr[i + 1] = arr[i];//transferring elements to second array and shifting by 1 cell
cout << secArr[i + 1] << endl;//printing elements of second array
}
return 0;//terminating program
}
Explanation:
The array size can range from any number. just make sure to keep arr one less than secArr. This is because we need the room for the extra element. This task is to help you understand how array work and how to parse through them using loops. For loops are the best for this task because even if you think intuitively, they work for as long as there are items in the array. and you can define the size yourself.
Answer:
#include <iostream>
using namespace std;
int * reverse(int a[],int n)//function to reverse the array.
{
int i;
for(i=0;i<n/2;i++)
{
int temp=a[i];
a[i]=a[n-i-1];
a[n-i-1]=temp;
}
return a;//return pointer to the array.
}
int main() {
int array[50],* arr,N;//declaring three variables.
cin>>N;//taking input of size..
if(N>50||N<0)//if size greater than 50 or less than 0 then terminating the program..
return 0;
for(int i=0;i<N;i++)
{
cin>>array[i];//prompting array elements..
}
arr=reverse(array,N);//function call.
for(int i=0;i<N;i++)
cout<<arr[i]<<endl;//printing reversed array..
cout<<endl;
return 0;
}
Output:-
5
4 5 6 7 8
8
7
6
5
4
Explanation:
I have created a function reverse which reverses the array and returns pointer to an array.I have also considered edge cases where the function terminates if the value of the N(size) is greater than 50 or less than 0.
Answer:
C. The number of items in the column list doesn't match the number in the VALUES list.
Explanation:
The INSERT INTO statement is used to insert new records in a table.
<u>Syntax is as follows:</u>
INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
Each column item has to match with the values to be inserted in the same order.
In the question, there are 8 column items specified whereas there are only 7 values given to be inserted.
