Question

In C please! Thank you!

Write a program that finds the smallest (min), largest (max), and average (mean) of N values entered by the user. Your program should begin by prompting the user for N, the number of values to be entered. Then the program should accept that number of values, determining the min, max, and mean. Then it should display those values.

This is an extension of a previous lab. First, get it working for N values. Then, extend it to include error-checking, in case the user makes a mistake when entering values.

When scanning for a value for N, the program should use error checking to protect against erroneous inputs from the user and only accept positive integer values. The other values entered can be any value, but error checking should still be employed to ensure that the user entered a value. If there is ever an incorrect input the user should be re-prompted for the value and told of the error.

Steps for the program:

• Prompt the user for N
• Scan the value of N
• Prompt and Scan for N Values
  • Simultaneously search for Max and Min values
  • Add all values to generate a sum
• Calculate the average by dividing the sum by N, MEAN=sum/N
• Display min, max, and mean values

An example run of the program is given below where the user enters five values (ie N=5):

MIN, MAX, and MEAN CALCULATOR

How many values are to be entered?: -4
INPUT ERROR!
How many values are to be entered?: 4

Value 1: 2
Value 2: as
INPUT ERROR!
Value 2: 17
Value 3: 3
Value 4: 5

The minimum value is 2, the maximum value is 17, and the average value is 6.75.

Answer 1

Program

#include <stdio.h>
#include <ctype.h>

int main(void)
{
    //Declare variables
    int N,values[50],max,min,i,num;
    float sum=0,mean;
  
    printf("How many values are to be entered?");
    scanf("%d",&N);
    while(N<0)
    {
    printf("INPUT ERROR!");
    printf("\nHow many values are to be entered?");
    scanf("%d",&N);
    }
  
    for(i=0;i<N;i++)
    {
     printf("Value %d : ",i+1);
     while(scanf("%d",&values[i])==0)
     {
     printf("INPUT ERROR!");
     printf("\nValue %d : ",i+1);
     scanf("%*s");
     }
    }
     max=min=values[0];
     for(i=0;i<N;i++)
     {
     sum+=values[i];
     /* If current element of array is greater than max */
     if(values[i]>max)
     {
      max = values[i];
      }

      /* If current element of array is smaller than min */
      if(values[i]<min)
      {
       min = values[i];
       }
     }
   
    mean=sum/N;
    printf("The minimum value is %d, the maximum value is %d, and the average value is %.2f.",min,max,mean);
    return 0;
}

Output