First, write a function which will find the sum of all elements of one-dimensional array:       2.0,4.0,6.0,8.0,10.0 declared and list initialized in main(). Then use a call by reference in main(), and display the value of the sum as the function’s return value.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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 First, write a function which will find the sum of all elements of one-dimensional array:

      2.0,4.0,6.0,8.0,10.0

declared and list initialized in main(). Then use a call by reference in main(), and display the value of the sum as the function’s return value.

 

Expert Solution
Step 1

Programming instructions:

 

  • Include necessary header files.
  • Declare and initialize the array.
  • Call the function display() and pass the array by reference.
  • In the function, calculate the sum of all elements in the array and return the sum.
  • Display the sum value returned by the function.
Step 2

Program:

 

#include <iostream>
using namespace std;

//Function definition
double display(double *p)
{
    double sum=0;
    for(int i=0;i<5;++i)
    {
        sum= sum + *p;
        p++;
    }
    return sum;
}

//Main funtion
int main(){
    //Array
    double n[ ] = {2.0, 4.0, 6.0, 8.0, 10.0};
    //Call the function
    cout<<display(n);
    return 0;
}

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