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 <iostream> // 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<n;k++) // iterating over the loop

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<n1; i ++) // iterating over the loop

{

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:"<<maximum; // display the maximum value

cout<<" all the value are equal";

}

else

{

cout<<"Maximum value:"<<maximum; // display the maximum value

cout<<"Second largest:"<<second;// display the  second maximum value

}

}

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

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