Question

Use C++

How many values to process? 50 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Data file: Largest value: Smallest value: Average of values: myowninput.txt XXX yyy ZZZ.ZZ Press any key to continue...

For this week’s lab you will write a program to read a data file containing numerical values, one per line. The program should compute average of the numbers and also find the smallest and the largest value in the file. You may assume that the data file will have EXACTLY 100 integer values in it. Process all the values out of the data file. Show the average, smallest, largest, and the name of the data file in the console window (and output file) as pictured below. You will need to use a while loop to read all the values!

1. Write the algorithm – the list of steps needed to solve the problem. No C++ statements please! Use words like Get/Read, Sum, Average, Repeat, and Display. Think about what instructions you would need to read and process one value, then by putting this set of instructions in the loop you are able to process many values.

2. Write the C++ statements for the constant and variable declarations, choosing a name and data type for each one. Then write the C++ statements for the steps listed in step 1. Think about what C++ statement can be used for each step and carefully check the format and punctuation for each one.

3. Type the program – Create a new C++ project folder in Visual Studio using your last name and first initial (e.g., MortonL_Lab7). Add a source file to the project. Put your name, class time and today's date in comments at the very beginning of the code. Add inline comments and the code in the main function.

4. Debug program – Correct any errors found in your code.

5. Test program – What values are you expecting to see? Are you seeing these values? Verify by computing the expected value yourself… Excel may be useful to do this rather than entering all the values by hand into a calculator. In bonus part what should happen if the user enters a negative value or something larger than 100?

6. If you plan to go on and do the Bonus, wait and turn in your project after finishing that part. Otherwise, turn in your compressed solution electronically via Canvas. Run your program with input of 100 and screen capture the results which you should paste into the grade sheet. SAMPLE OUTPUT Data file: lab7_input.txt Largest value: xxx Smallest value: yyy Average of values: zzz.zz Press any key to continue… Optional Instructions Modify the code to ask the user for the number of values to read out of the data file and a new file name (use “myowninput.txt”). Create the myowninput.txt data file with at least 25 numerical values (one per Lab 7 DUE: Specified on Canvas CS 2010, Carlson line) and place it in the project folder where your .cpp file is stored. Make sure there are no blank lines at the end of the file. Read the given number of values out of the file. This number has to be less than or equal to 25 and greater than 5 so validate it. If any other value is requested by the user, the program should terminate with an error message and not process any values. Verify the computed results.

Output File

44

33

11

13

15

37

48

57

34

72

33

89

681

22

123

154

54

44

23

77

91

12

12

24

56

67

22

13

108

88

23

22

45

67

11

12

33

15

67

77

81

11

12

98

50

30

48

35

66

27

98

119

72

11

61

24

42

33

22

11

110

51

38

69

46

77

13

290

176

467

57

888

28

34

55

22

78

11

22

11

15

27

38

49

56

45

48

17

38

99

62

63

144

77

55

89

39

26

40

14

Answer 1

****This requires some effort so please drop a like if you are satisfied with the solution****

I have satisfied all the requirements of the solution and I'm providing the screenshots of output obtained exactly the same as above and code for your reference..

Algorithm:

Step 1: Start

Step 2: create an ifstream object and read the file from path

Step 3: declare string variables str to store each number while reading file , filename to store the filename

Step 4: declare integer variables max ,min, count, process and double variable avg to store the avg

Step 5: print "How many values to process"

Step 6: read process

Step 7: if file is not open then print " Error while opening file

Step 8: if file is bad or corrupt then print " Error while reading file"

Step 9: run while until getline(f,str)

Step 9.1: create stringstream object stoi(str)

Step 9.2 if process == count then break the loop

Step 9.3: increment count by 1

Step 9.4: convert str to int and store it in x

Step 9.5: if max<x then max=x

Step 9.6 if min>x then min=x

Step 9.7 calculate avg= avg+x

Step 10: calculate avg=avg/count

Step 11: print "Data File" filename

Step 12: print "Largest value: " max

Step 13: print "Smallest value: " min

Step 14: print "Average of values: "avg

Step 15: Stop

Code:

#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>
using namespace std;
int main() {

//path to the file on my desktop
ifstream f("C://Users/THE__INFINITY/Desktop/input.txt");
   string str,filename="input.txt";
   int max=-9999,min=9999,count=0,process,x;
   double avg=0;
   cout<<"How many values to process ?";
   cin>>process;
   if (!f.is_open())
   perror("error while opening file");
else if (f.bad())
   perror("error while reading file");
   else{
       while(getline(f, str)) {
           stringstream stoi(str);
           if(process==count)
               break;
       count++;
       stoi >> x;
       if(max<x)
           max=x;
       if(min>x)
           min=x;
       avg+=x;
       }
       avg=avg/count;
       cout<<"\n-----------------------------------"<<endl;
       cout<<"Data file: "<<filename<<endl;
       cout<<"Largest value: "<<max<<endl;
       cout<<"Smallest value: "<<min<<endl;
       cout<<"Average of Values: "<<std::fixed<<std::setprecision(2)<<avg;
   }
   return 0;
}

Input file (input.txt):

inputbt input.txt - Notepad View Help File Edit Format 44 33 11 13 15 37 48 57 34 72 33 89 X

Output Screenshot:

F:AUntitled1.exe X How many values to process ?50 Data file: Largest value : Smallest value: Average of Values: input.txt 681 11 59.74 Process exited after 1.885 seconds with return value e Press any key to continue

Code Screenshot:

#include <iostream> 1 #include <fstream> #include <sstream> #include <iomanip> using namespace std 6 int main() { 4 5 ifstream f("C : //Users/THE_INFINITY/Desktop/input.txt"); string str,filename= "input.txt"; int max-9999, min=9999, count=0, process,x double avg0; cout<<"How many values to process ?" cin>>process; if (!f.is_open ( ) ) perror("error while opening file"); else if (f.bad ( ) ) perror("error while reading file"); else while(getline (f, str)) 10 11 12 13 14 15 16 17E 18 stringstream stoi(str); if (processcount ) 19 20 break 21 count++ stoi >> xj if(max<x) 22 23 24 max=x 25 if (min>x) 26 minEx 27 avg+x } avg-avg/count 28 29 30 -"<<endl: 31 cout<<"\n----

avg avg/count; cout<<"\n--- cout<"Data file --- "<<endl; 31 "<<filename<<endl; "<<max<<endl; "<<min<<endl; "<<std::fixed< < std : : setprecision(2)<< avgj 32 33 cout<<"Largest value: 34 cout<<"Smallest value: cout<<"Average of Values: 35 36 return 0; } 37 38 Nm n ON C0 m m m O