Anybody know this?,I'm tired of searching.

Question

Q/ Write a C++ function named it (count) to count the even numbers in the array and return it. In the main method declare an int array of size 5 and ask user to input elements in to it, call your count function to output the number of even numbers in the array.

Answer 1

Rovan Xalil , Welcome 😀
keep learning!

Answer 2

If you need help show your attempt.
If you get stuck while solving problem , feel free to ask. Link your code in description of this question.

It's not very hard you just need to know about operators and if-else statement. Try it.

Answer 3

Thanks for your suggestion.
Here is my code I did it with Void Type ,but i want it in Return Type.
i tried a lot i couldn't.

#include <iostream>
using namespace std;
void Count(int TestArr[]);
int main()
{
int TestArr[5];
cout << "Hi User enter the array elements? " << endl;
for (int i = 0; i < 5; i++) {
cin >> TestArr[i];
}

Count(TestArr);

return 0;
}

void Count(int TestArr[]) {
cout << "These are the even numbers that you want: " << endl;
for (int i = 0; i < 5; i++) {

if (TestArr[i] % 2 == 0) {

cout << TestArr[i] << endl;
}
}

}

Answer 4

Rovan Xalil ,
Thanks for understanding. Often people ask questions but don't understand that efforts from their side matter the most.

back to question,
You can return only one value at a time from a function. You could use pointers , raw arrays but that's more of C way.
https://www.sololearn.com/discuss/2183600/?ref=app

In C++ we have vectors , tuples and many more classes to make coding efficient.

#include <iostream>
#include <vector>
using namespace std;

vector<int> Count(int TestArr[]) {

vector <int> v;
for (int i = 0; i < 5; i++) {
if (TestArr[i] % 2 == 0) {
v.push_back(TestArr[i]);
}
}
return v;
}

int main()
{
int TestArr[5];
cout << "Hi User enter the array elements? " << endl;
for (int i = 0; i < 5; i++) {
cin >> TestArr[i];
}

cout<<"Here are even numbers\n";
auto vec = Count(TestArr);
for(int elem : vec)
cout<<elem<<" ";

return 0;
}

Answer 5

You can see how to return raw arrays in post I shared in previous answer.

Using vector will be much easier. I have declared return type as vector<int> which means vector of integers. Vector can be resized at runtime. You'll understand <int> is template argument if you have seen this in tutorial. class templates.

push_back is method of vector class that inserts new element at end of collection.

If you still have doubts then search official documentation , if still don't understand then ask here.

Answer 6

🇮🇳Omkar,Thank you man I understand now i didn't know about Vectors.
You did a lot to me Thank you very much.