Question

Please write a C++ program that will accept 3 integer numbers from the user, and output these 3 numbers in order, the sum, and the average of these 3 numbers. You must stop your program when the first number from the user is -7.

Design Specifications:

(1) You must use your full name on your output statements.

(2) You must specify 3 prototypes in your program as follows:

int max(int, int, int); // prototype to return maximum of 3 integers

int min(int, int, int); // prototype to return minimum of 3 integers

int mid(int, int, int); // prototype to return middle of 3 integers

(3) You must define the above 3 integer functions properly in your program.

(4) You must NOT use any C++ existing functions in your program.

(4) You must fully test your program to make sure these 3 functions are working perfectly for any data.

===========================================================================.

The following is a sample standard test, which must be your test case #1. You must also do test case #2and test case #3 with different set of data to prove that your program is working perfectly for any data.

Please enter 3 integer numbers in any order (-7 to stop) :  7 6 5

You just entered 3 numbers: 7, 6, 5

These 3 numbers in order are 5, 6, 7

The sum of these 3 numbers is 18

The average of these 3 numbers is 6

Please enter 3 integer numbers in any order (-7 to stop) :  3 4 5

You just entered 3 numbers: 3, 4, 5

These 3 numbers in order are 3, 4, 5

The sum of these 3 numbers is 12

The average of these 3 numbers is 4

Please enter 3 integer numbers in any order (-7 to stop) :  5 9 7

You just entered 3 numbers: 5, 9, 7

These 3 numbers in order are 5, 7, 9

The sum of these 3 numbers is 21

The average of these 3 numbers is 7

Please enter 3 integer numbers in any order (-7 to stop) :  9 9 9

You just entered 3 numbers: 9, 9, 9

These 3 numbers in order are 9, 9, 9

The sum of these 3 numbers is 27

The average of these 3 numbers is 9

Please enter 3 integer numbers in any order (-7 to stop) :  -7 0 0

Thank you for playing this SUPER game designed by ********！

Answer 1

#include <iostream>

using namespace std;

void printOrder(int a,int b,int c){

if (a>b && b>c) {

cout<<c<<" "<<b<<" "<<a;

}

else if (a>c && c>b)

cout<<b<<" "<<c<<" "<<a;

else if (b>a && a>c)

cout<<c<<" "<<a<<" "<<b;

else if (b>c && c>a)

cout<<a<<" "<<c<<" "<<b;

else if (c>a && a>b)

cout<<b<<" "<<a<<" "<<c;

else cout<<a<<" "<<b<<" "<<c;

cout<<endl;

}

int main() {

int n1,n2,n3;

double sum=0,avg;

while(true){

cout<<"Please enter 3 integer numbers in any order (-7 to stop) : ";

cin>>n1;

if(n1==-7)

break;

cin>>n2;

cin>>n3;

sum=n1+n2+n3;

avg=sum/3;

cout<<"You just entered 3 numbers: "<<n1<<" "<<n2<<" "<<n3<<endl;

cout<<"These 3 numbers in order are: ";

printOrder(n1,n2,n3);

cout<<"The sum of these 3 numbers is: "<<sum<<endl;

cout<<"The average of these 3 numbers is: "<<avg<<endl;

}

}