LAB $10\mathrm{.}3$ Using getline$()$ & get$()$

Exercise $1$: Write a short program called readata.cpp that defines a character

array last which contains $10$ characters. Prompt the user to enter their last

name using no more than $9$ characters. The program should then read the

name into last and then output the name back to the screen with an

appropriate message. Do not use the getline$()$ or get functions!

Exercise $2$: Once the program in Exercise $1$ is complete, run the program and

enter the name Newmanouskous at the prompt. What, if anything,

happens? $($Note that the results could vary depending on your system$).$

Exercise $3$: Re$-$write the program above using the getline$()$ function $($and

only allowing $9$ characters to be input$).$ As before, use the character array

last consisting of $10$ elements. Run your new program and enter

Newmanouskous at the prompt. What is the output?

Exercise $4$: Bring in program grades.cpp and grades.txt from the Lab $10$

folder. Fill in the code in bold so that the data is properly read from

grades.txt$.$ and the desired output to the screen is as follows:

OUTPUT TO SCREEN DATAFILE

Adara Starr has a$($n$)94$ average Adara Starr $94$

David Starr has a$($n$)91$ average David Starr $91$

Sophia Starr has a$($n$)94$ average Sophia Starr $94$

Maria Starr has a$($n$)91$ average Maria Starr $91$

Danielle DeFino has a$($n$)94$ average Danielle DeFino $94$

Dominic DeFino has a$($n$)98$ average Dominic DeFino $98$

McKenna DeFino has a$($n$)92$ average McKenna DeFino $92$

Taylor McIntire has a$($n$)99$ average Taylor McIntire $99$

Torrie McIntire has a$($n$)91$ average Torrie McIntire $91$

Emily Garrett has a$($n$)97$ average Emily Garrett $97$

Lauren Garrett has a$($n$)92$ average Lauren Garrett $92$

Marlene Starr has a$($n$)83$ average Marlene Starr $83$

Donald DeFino has a$($n$)73$ average Donald DeFino $73$

The code of grades.cpp is as follows:

#include

#include

using namespace std;

$//$ PLACE YOUR NAME HERE

const int MAXNAME $=20$;

int main$()$

$\{$

ifstream inData;

inData.open$("$grades$.$txt$")$;

char name$[$MAXNAME $+1]$; $//$ holds student name

float average; $//$ holds student average

Lesson $10$B $193$

inData.get$($name$,$MAXNAME$+1)$;

while $($inData$)$

$\{$

inData $>>$ average;

$//$ Fill in the code to print out name and

$//$ student average

$//$ Fill in the code to complete the while

$//$ loop so that the rest of the student

$//$ names and average are read in properly

$\}$

return $0$;

$\}$