//

// Example of how to use template

//

// Week 2, lecture 2.1

//

#include<iostream>

using namespace std;

#include <vector>

//-=-=-=-=-=-=-=-=-=-=-

//

// Ideas

// -----

// data is not mutable, usa a const

// s with default 0

//

// I can call this function with:

//

// sum(scores, 92)

// sum(scores, 92,58) -> In this case s starts with 58

//

// You could use a default falue for size variable

//

//-=-=-=-=-=-=-=-=-=-=-

template <class T>

T sum(T data[], int size, T s = 0) {

for (int i = 0; i < size; ++i)

s+= data[i]; // += must work for T

return s;

}

template <class T>

T display(T data[], int size) {

for (int i = 0; i<size; ++i)

cout << "Value(" << i << ") = " << data[i] << endl;

return 0;

}

int main() {

cout << "template for sum()" << endl;

int a[] = {1, 2, 3};

double b[] = {2.1, 2.2, 2.3};

cout << sum(a,3) << endl;

cout << sum(b,3) << endl;

a[1] = 5;

b[1] = 5.5;

cout << sum(a,3) << endl;

cout << sum(b,3) << endl;

display(a, 3);

display(b, 3);

}