Question

C++ QUESTION

Loops, arrays, functions

find the three largest values in an array of integers and output them to the screen. You must utilize at least three functions, counting main as a function, AND you must use parameters/arguments in one of them.

Set up an integer array of 10 elements, read in the ten elements from the keyboard.

There are many ways to solve this lab. Here are a couple of ideas:

Use a function to find the largest value in the array, output it, then set it to 0 and repeat Or Use a function to sort the array, then output the first three values Or ???

Answer 1

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this one is edited

below is the code written in C++ to find the largest three values in a given array

#include<bits/stdc++.h> using namespace std; void three_largest(int arr[], int arr_size) { int k, first, second, third; if (arr_size < 3) { cout << "Invalid Input"; } third = first = second = INT_MIN; for (k = 0; k < arr_size ; k ++) { if (arr[k] > first) { third = second; second = first; first = arr[k]; } else if (arr[k] > second) { third = second; second = arr[k]; } else if (arr[k] > third) third = arr[k]; } cout << "\nThree largest elements are: " <<first <<", "<< second <<", "<< third; } int main() { int nums[] = {7, 12, 9, 15, 19, 32, 56, 70}; int n = sizeof(nums)/sizeof(nums[0]); cout << "Original array: "; for (int k=0; k < n; k++) cout << nums[k] <<" "; three_largest(nums, n); return 0; }

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