Why visual studio doesnt run this program

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Given an array of numbers, containing 10 elements. Write a function that sorts an array in ascending or descending order, depending on the third function parameter. If it is equal to 1, sort is carried out in a descending order if 0 then it is a ascending order. First two 2 function parameters is an array and its size, the third parameter is default equal to 1.

There is red line under the word "default" and "homework".(

What I have tried:

C++

#include<iostream>
#include<ctime>

using namespace std;



int homework(int arr[], const int SIZE = 10, int default = 1) {

	srand(time(NULL));

	for (int i = 0; i < SIZE; i++)
	{
		arr[i] = rand() % 100;
	}

	for (int i = 0; i < SIZE; i++)
	{
		cout << arr[i] << " ";
	}

	cout << endl << endl;

	if (default == 1) {
		for (int i = 0; i < SIZE; i++)
		{
			for (int i = 0; i < SIZE - 1; i++) {
				if (arr[i] < arr[i + 1]) {
					int temp = arr[i];
					arr[i] = arr[i + 1];
					arr[i + 1] = temp;
				}
			}
		}
	}
	else if (default != 1) {
		for (int i = 0; i < SIZE; i++)
		{
			for (int i = 0; i < SIZE - 1; i++) {
				if (arr[i] > arr[i + 1]) {
					int temp = arr[i];
					arr[i] = arr[i + 1];
					arr[i + 1] = temp;
				}
			}
		}
	}

	for (int i = 0; i < SIZE; i++)
	{
		cout << arr[i] << " ";
	}

	return 0;
}


int main() {

	const int SIZE = 10;

	int arr[SIZE];

	homework(arr, SIZE, 1);
}

Posted 10-Feb-18 8:23am

Member 13589920

Updated 10-Feb-18 8:54am

David_Wimbley

v2

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David_Wimbley 10-Feb-18 14:34pm

So what is your issue? If visual studio "doesn't run it"...what error are you getting?

1 solution

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KarstenK · Answer 1 · 2018-02-10T08:54:00

you should change the function head to this:

C++

int homework(int arr[], const int size, bool loopType)

you cant use default parameters in the implementation. Dont use BIG LETTER as var names, but only for constants. And "default" is an reserverd keyword (in switch loopes)
your coding

C++

if (default == 1) {
		// ...
	}
	else if (default != 1)///NOT NEEDED !!!!

resolves to this

C++

if (loopType) {
		// ...
	}
	else {

you can do it in one loop

C++

for (int i = 0; i < SIZE; i++)
	{
		arr[i] = rand() % 100;// set value
		cout << arr[i] << " "; //read and output value
	}