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C++ Exercises: Find all elements in array of integers which have at-least two greater elements

C++ Array: Exercise-6 with Solution

Write a C++ program to find all elements in array of integers which have at-least two greater elements.

Sample Solution:

C++ Code :

#include<iostream>
using namespace std;
 
void find_greater_elements(int nums[], int n)
{
    cout << "\nElements which have at-least two greater elements: ";
    for (int i=0; i<n; i++)
    {
        int ctr = 0;
        for (int j=0; j<n; j++)
            if (nums[j] > nums[i])
                ctr++;
 
        if (ctr >= 2)
            cout << nums[i] << " ";
    }
}
 

int main()
{
    int nums[] = {7, 12, 9, 15, 19, 32, 56, 70};
    int n = sizeof(nums)/sizeof(nums[0]);
    cout << "Original array: ";
    for (int i=0; i < n; i++) 
    cout << nums[i] <<" ";
   find_greater_elements(nums, n);
    return 0;
}

Sample Output:

Original array: 7 12 9 15 19 32 56 70 
Elements which have at-least two greater elements: 7 12 9 15 19 32  

Flowchart:

Flowchart: Find all elements in array of integers which have at-least two greater elements

C++ Code Editor:

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C++ Programming: Tips of the Day

Can I assume (bool)true == (int)1 for any C++ compiler?

According to the standard, you should be safe with that assumption. The C++ bool type has two values - true and false with corresponding values 1 and 0.

The thing to watch about for is mixing bool expressions and variables with BOOL expression and variables. The latter is defined as FALSE = 0 and TRUE != FALSE, which quite often in practice means that any value different from 0 is considered TRUE.

A lot of modern compilers will actually issue a warning for any code that implicitly tries to cast from BOOL to bool if the BOOL value is different than 0 or 1

Ref: https://bit.ly/3PWhs5N