Write a function that takes an array of integers and its size as parameters and prints the two largest values in the array. In this question, the largest value and the second largest value cannot be the same, even if the largest value occurs multiple times.

Following are the program in c+ + language

#include / / header file

using namespace std; / / namespace

void largest (int a[], int size); / / function declaration

int main () / / main method

{

int arr[30], n, count1=0; / / variable declaration

cout<<" enter the size elements in array:";

cin>>n; / / read the input by user

cout<<"enter array elements:";

for (int k=0; k
cin>>arr[k]; / / read the elements in the array

largest (arr, n); / / calling function largest

return 0;

}

void largest (int a[], int n1) / / function definition

{

int i, maximum, second, count=0; / / variable declaration

if (n1<2) / / checkiing the condition

{

cout<<"invalid input"; / / print the message

return;

}

else

{

maximum = INT8_MIN; / / store the minimum value of an object

second=INT8_MIN; / /store the minimum value of an object

for (i = 0; i
{

if (a[i]>maximum) / / comparing the condition

{

second = maximum; / / store the maximum value in the second variable

maximum = a[i];

count++; / / increment the count

}

else if (a[i] > second && a[i]! = maximum)

{

second = a[i];

count++;

}

}

}

if (count<2)

{

cout<<"Maximum value:"<
cout<<" all the value are equal";

}

else

{

cout<<"Maximum value:"<
cout<<"Second largest:"<
}

}

Output:

enter the size elements in array:4

enter array elements:5

47

58

8

Maximum value:58 Second largest:47

Explanation:

Following are the description of program

In this program, we create a function largest which calculated the largest and the second largest element in the array. Firstly check the size of elements in the if block. If the size is less then 2 then an invalid messages will be printed on console otherwise the control moves to the else block. In the else block it stores the minimum value of an object in a maximum and second variable by using INT8_MIN function. After that iterating the loop and find the largest and second-largest element in the array. In this loop, we used the if-else block and find the largest and second-largest element. Finally, print the largest and second-largest elements in the array