4.16 LAB: Varied amount of input data Statistics are often calculated with varying amounts of input data. Write a program that takes any number of non-negative integers as input, and outputs the average and max. A negative integer ends the input and is not included in the statistics. Ex: If the input is: 15 20 0 5 -1 the output is: 10 20 You can assume that at least one non-negative integer is input. 254058.1561406

Here is the C program. Let me know if you want the program in some other programming language.

#include <stdio.h>   //to use input output functions

int main() {   //start of main function

int num;   // to store input numbers

int sum = 0;  //to store the sum of numbers

scanf("%d", &num);   //reads the numbers from user

int count = 0;   //to count the total numbers entered by user

int max = 0;   //to store the maximum of numbers

while(num >= 0)  {  //continues to execute until user enters negative number

sum+=num;   //adds the numbers

scanf("%d", &num);   //reads the numbers from user

count++;   //counts the numbers entered

if(num>=max){    //if number is greater than numbers stored in max

 max = num;   }   }  //assigns that maximum number to max

   printf("%d %d", sum/count,max);  }  //displays the average of numbers and maximum of numbers

Explanation:

I will explain the program with an example. Lets say the first number input by user is 15. Then the loop works as follows:

At first iteration:

num >= 0 is true because 15 is greater than 0 so program moves to the body of loop

sum+=num; becomes:

sum = sum + num

sum = 0 + 15

sum = 15

count++; becomes:

count = count + 1

count = 0 + 1

count = 1

if(num>=max) means if(15>=0) this is true so

 max = num;  this becomes:

max = 15

Lets say the next value entered by user is 20. It is stored in num variable

At second iteration:

num >= 0 is true because 20 is greater than 0 so program moves to the body of loop

sum+=num; becomes:

sum = sum + num

sum = 15 + 20

sum = 35

count++; becomes:

count = count + 1

count = 1 + 1

count = 2

if(num>=max) means if(20>=15) this is true so

 max = num;  this becomes:

max = 20

Lets say the next value entered by user is 0. It is stored in num variable

At third iteration:

num >= 0 is true because 0 is equal to 0 so program moves to the body of loop

sum+=num; becomes:

sum = 35 + num

sum = 35 + 0

sum = 35

count++; becomes:

count = count + 1

count = 2 + 1

count = 3

if(num>=max) means if(0>=20) this is false so

 max = num;  this remains:

max = 20

Lets say the next value entered by user is 5. It is stored in num variable

At fourth iteration:

num >= 0 is true because 5 is greater than 0 so program moves to the body of loop

sum+=num; becomes:

sum = 35 + 5

sum = 35 + 5

sum = 40

count++; becomes:

count = count + 1

count = 3 + 1

count = 4

if(num>=max) means if(5>=20) this is false so

 max = num;  this remains:

max = 20

Lets say the next value entered by user is -1. It is stored in num variable

Now the loop breaks because num >= 0 is false because -1 is less than 0 so program moves to the statement:

printf("%d %d", sum/count,max);

This has two parts to print on output screen:

sum/count which is 40/4 = 10

max which is 20

So the output of the entire program is:

10  20

The screenshot of program along with its output is attached.