Question

c++ no pointers just follow instructions

Write a program (array.cpp) that read positive floating point numbers into an array of capacity 100. The program will then ask for one of three letters(A, M or S). if the user inputs something other than one of these letters, then the program should ask for that input until an A, M, or S is entered. A do-while loop should be used for this.

If the user inputs an A, then the program should determine and print the average of the numbers. If the user inputs an M, then the program should determine and print the max of the numbers. If the user inputs an S, then the program sorts the values into ascending order and display the numbers

Your program should define at least the following three user defined functions

1. ComputeAverage: This function computes and prints the average of the values in an array

2. FindMax: This function finds and prints the largest value in an array

3. Sort : This function sorts the values into ascending order

copy the datafile into the project directory using the command :

cp ~mnan/data/arraytest.dat

The program should include all directives and comments

Answer 1

PROGRAM

#include<iostream>
using namespace std;
//function to find average
int ComputeAverage(float a[100])
{
float sum=0,avg;
//using a loop, each element is added to the sum
for(int i=0;i<100;i++)
{
sum=sum+a[i];
}
//average is found by dividing the total sum to the no:of elements
avg=sum/100;
//printing result
cout<<"Average is "<<avg;
return 0;
}
//function to find max of nos
int FindMax(float a[100])
{
int i;
float n=0;
//using a loop check whether the particular element of the array is greater than the variable n
for(i=0;i<100;i++)
{
if(a[i]>n)
//if greater, assign to n.
n=a[i];
}
//print max
cout<<"Max of the numbers are: "<<n;
return 0;
}
//function to sort the array
int Sort(float a[100])
{
float temp;
int i,j;
//using 2 loops check if the first element is greater than the second.
for(i=0; i<100; i++)
{
for(j=i+1; j<100; j++)
{
if(a[j] < a[i])
{
//if greater,swap the numbers
temp = a[i];
a[i] = a[j];
a[j] = temp;
}
}
}
//display sorted array
cout<<"The sorted array:\n";
for(i=0;i<100;i++)
{
cout<<endl<<a[i];
}   
return 0;
}
int main()
{
float arr[100];
int i;
char c;
cout<<"Enter the numbers: \n";
//read elements of the array
for(i=0;i<100;i++)
{
cin>>arr[i];
}
//prompt for user selection
cout<<"A , M or S ? :\n";
do
{
//read user input
cin>>c;
//using switch, check user input
switch(c)
{
case 'A':
//if A , call ComputeAverage()
ComputeAverage(arr);
return 0;
break;
case 'M':
//if M call FindMax()
FindMax(arr);
return 0;
break;
case 'S':
//if S call Sort()
Sort(arr);
return 0;
break;
default:
//if user enters wrong input, prompt for correct input.
cout<<"\n Please choose one of these. A , M or S?\n";
}
//do this loop until user enters valid input.
}while(c!='A'&& c!='M' && c!='S');
  
return 0;   
}
  
1#include<iostream> 2 using namespace std; 3//function to find average 4 int ComputeAverage(float a[100]), 5{ 6. float sum=0, avg; 7 //using a loop, each element is added to the sum | 8 for(int i=0; i<100; i++) sum=sum+a[i]; //average is found by dividing the total sum to the no:of elements avg=sum/100; ' //printing result cout<<"Average is "<<avg; return 0; 17 } 18//function to find max of nos 19 int FindMax(float a[100]), 20 { 21 int i;

22 float n=0; 231 //using a loop check whether the particular element of the array is greater than the variable n for(i=0; i<100; i++) if(a[i]>n) //if greater, assign to n. n=a[i]; //print max cout<<"Max of the numbers are: "<<n; 32 return 0; 33 } 34//function to sort the array 35 int Sort(float a[100]), 36 { 37 float temp; 38 int i, j; 39 //using 2 loops check if the first element is greater than the second. 40 for(i=0; i<100; i++)

{ for(j=i+1; j<100; j++), if(a[j] = a[i]) '//if greater, swap the numbers temp = a[i]; a[i] = a[j]; a[j] = temp; 1 7/display sorted array cout<<"The sorted array:\n"; for(i=0; i<100; i++) cout<<endl<<a[i]; } return 0; 60} 61 int main() 62 {

64 65 'float arr[100]; int i; char c; cout<<"Enter the numbers: \n"; //read elements of the array, for(i=0; i<100; i++) 66 cin>>arr[i]; 7/prompt for user selection cout<<"A , Mor S ? :\n"; do '//read user input cin>>c; 7/using switch, check user input switch(c) case 'A': //if A , call ComputeAverage (), ComputeAverage(arr); return 0;

break; case 'M': //if Mcall FindMax (). FindMax(arr); return 0; break; case 'S': //if S call Sort() Sort(arr); return 0; break; default: 7/if user enters wrong input, prompt for correct input. cout<<"\n Please choose one of these. A , Mor S?\n"; 100 //do this loop until user enters valid input. 101 '}while(c!='A'&& c!='M' && c!='S'); 102 103 return 0; 104}

SAMPLE OUTPUT( TO CHECK THE OUTPUT, I USED ONLY 5 ELEMENTS FOR THE ARRAY, NOT 100, AS IT TAKES A LOT OF TIME)

'Enter the numbers: 1.1. 2.1. A , M or s ? : Average is 3.04

Enter the numbers: 3.2 4.6 1.3 0.9 2.1. A , M or s ? : Max of the numbers are: 4.6

Enter the numbers: 4.3 1.2 9.3 2.4 0.3 A , Mor S ? : S The sorted array: 0.3 1.2 2.4 4.3 9.3

Enter the numbers: 4.2 4.3 6.5 9.2 A , M or ? : Please choose one of these. A , M or S? Please choose one of these. A , Mor S? Average is 5.04

All are 4 different runs.

I hope this is what you are looking for. Please rate this answer to let me know it was helpful to you. Thanks for reading. If any doubts please mention it in the comments below.