Question

This part requires you to write two programs, compile them, and execute them - just like our lab questions.  You may access these questions as many times as you need to and you have the entire duration of the test to complete these problems.

You must submit the program code and the sample outputs for each problem - just like lab.

These questions are worth 6 points each.

1.      C++ Write a program that reads 20 data values from a data file to fill a one dimensional array with 20 storage locations.  Then the  program should increment each of these values by 5 and then write these new values to a data file

Test your program by creating a data file with the numbers 1 through 20 stored in there.  Hand in:

A.  a copy of the program

B.  the input data file

C.  the output data file.

2.  C++ Write a program that allows the user to enter 5 numbers in the main part of the program.  It then sends these 5 values to a function called SUM.  This function adds all five numbers together and returns this sum to MAIN.  Finally, in MAIN, calculate the average and output both the sum and the average.

Test your program using these 5 numbers:    46, 55, 86, 62, 5

To hand in:   Send me ONE email with your programs and the output attached (just like you do for labs).

Answer 1

1. Program 1

#include <iostream>
#include <fstream.h>
#include <ctype.h>

using namespace std;

int main()
{
ifstream fin;
ofstream fout;
  
int A[20] ={0};
fin.open("Sample.txt");
if(!fin){
cout<<"File not found";
return -1;
}
int i =0;
char temp;
while(i < 20){
fin>>temp; // reads and fills into an array A
if(isspace(temp))
continue;
else{
A[i] =temp;
A[i]= A[i]+5; //increments all the values to
i++;
}
}
fout<<"\n"<<"Incremented Values:"
for(i=0 ; i<20; i++) //prints the incremented value to the file
{
fout<<A[i]<<" ";
  
}
  
fin.close();
fout.close();
return 0;
}

Output of the program 1:-

2. Program 2

The output of program 2