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hi please me on this to fix the error  and  this is not the graded question so please dont cancel the question.  this is a homework question and i need help

hi please me on this to fix the error  and  this is not the graded question so please dont cancel the question.  this is a homework question and i need help

Database System Concepts
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
Section: Chapter Questions
Problem 1PE
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hi please me on this to fix the error 

and  this is not the graded question so please dont cancel the question. 

this is a homework question and i need help 

You are working on problem set: Lab 1 copy mean Language/Type: Related Links: Author: C++ vector collections STL vector Eric Roberts (on 2021/07/06) Pause) i Write a function named mean that accepts as a parameter a reference to a vector of real numbers, and returns the arithmetic mean (average) of the integers in the vector as a real number. For example, if the vector passed contains {2.0, 4.5, 6.5, 1.0), your function should return 3.5. If the vector is empty, return Ø. Ø. Do not modify the vector that is passed in. You passed 3 of 4 tests. Try again. mean ({2.0, 4.5, 6.5, 1.0}) mean({9.0, 3.25, 2.5, 8.25, 15.0, -2.0, 35.5, 44.5}) mean ({1.0, 3.25, 2.5, 8.25, 15.0, -2.0, 35.5, 44.5, 0.0, 2.0}) → * mean({}) Testing began at 2023/02/01 17:16 (PST) and ran for 1319 ms. ← 3.5 14.5 11.0 → -nan (expected Ø.0) 1 #include <iostream> 2 #include <vector> 3 using namespace std; 4 double mean (vector<double> &v) { double sum = Ø; 6 for (int i=0; i < v.size(); i++) sum += v[i]; return sum/v.size(); 8 9} 10 int main() 11 { 12 13 14 15 16 17 } 18 19 Function: Write a C++ function as described, not a complete program. // Sum of elements of the vector. vector<double> v{2.0, 4.5, 6.5, 1.0); double avg = mean(v); // Call the mean function. cout<<"Mean of the elements of the vector is :: " << avg; return 0; Submit X
Transcribed Image Text:You are working on problem set: Lab 1 copy mean Language/Type: Related Links: Author: C++ vector collections STL vector Eric Roberts (on 2021/07/06) Pause) i Write a function named mean that accepts as a parameter a reference to a vector of real numbers, and returns the arithmetic mean (average) of the integers in the vector as a real number. For example, if the vector passed contains {2.0, 4.5, 6.5, 1.0), your function should return 3.5. If the vector is empty, return Ø. Ø. Do not modify the vector that is passed in. You passed 3 of 4 tests. Try again. mean ({2.0, 4.5, 6.5, 1.0}) mean({9.0, 3.25, 2.5, 8.25, 15.0, -2.0, 35.5, 44.5}) mean ({1.0, 3.25, 2.5, 8.25, 15.0, -2.0, 35.5, 44.5, 0.0, 2.0}) → * mean({}) Testing began at 2023/02/01 17:16 (PST) and ran for 1319 ms. ← 3.5 14.5 11.0 → -nan (expected Ø.0) 1 #include <iostream> 2 #include <vector> 3 using namespace std; 4 double mean (vector<double> &v) { double sum = Ø; 6 for (int i=0; i < v.size(); i++) sum += v[i]; return sum/v.size(); 8 9} 10 int main() 11 { 12 13 14 15 16 17 } 18 19 Function: Write a C++ function as described, not a complete program. // Sum of elements of the vector. vector<double> v{2.0, 4.5, 6.5, 1.0); double avg = mean(v); // Call the mean function. cout<<"Mean of the elements of the vector is :: " << avg; return 0; Submit X
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We can use a if condition so that if size is 0 of vector return 0.0 as output

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