Answer to Question #202657 in C++ for SONAM YENTEN

Question

Write a template function that returns the average of all the elements of an array. The arguments to the function should be the array name and the size of the array (type int). In main(), exercise the function with arrays of type int, long, double, and char

Answer 1

#include <iostream>
using namespace std;
template<typename type>
type average(type arr[], int size){
    double sum = arr[0];
    for(int i = 1; i < size; i++) sum += arr[i];
    return (type)(sum / size);
}
int main(){
    int intarr[] = {1, 2, 3, 4, 5}, size = 5;
    cout<<"Integer: "<<average<int>(intarr, size);


    long longarr[] = {1, 2, 3, 4, 5};
    cout<<"\nLong: "<<average<long>(longarr, size);


    double doublearr[] = {1.0, 2.0, 3.0, 4.0, 5.0};
    cout<<"\nDouble: "<<average<double>(doublearr, size);


    char chararr[] = {'a', 'b', 'c', 'd', 'e'};
    cout<<"\nChar: "<<average<char>(chararr, size);


    return 0;
}