EGR 1400 Exam 1 2023 With Completed
Solutions.
In C#, you can simulate rolling two dice by selecting a random number between
1 and 6 to represent each die roll and then adding them together to get the dice
total. Let,s say that we developed a program to do this and we rolled the pair of
dice 50 times and recorded the results of each roll on a sheet of paper. Can we
just select one random number between 2 and 12 and achieve the same
experimental results for the 50 rolls as rolling two die and adding them?
a. No, It's not possible to get the same experimental results with one random
number
b. Yes, using the same scaling as before
c. Yes, if the Visual C# code is written to scale the single random number
between 2 and 12
d. Yes, if the random number is selected using myRand.Next(2,13); - -No, It's not
possible to get the same experimental results with one random number
--What property of a Label control would you need to set to change the words
displayed in the Label on the form?
a. the Text property
b. the Name property
c. the Captain property
d. the Word property
e. None of these - -a. the Text property
--Which of the following is the best name for a text box that will hold a person's
age within a Visual Studio .NET project, keeping in mind the recommended
naming conventions?
a. Form1
b. txtAge
c. txtText1
d. Age
e. None of the above - -b. txtAge
--When the user clicks a button, ______ is raised.
a. an event
b. a setting
c. a method
d. a property - -a. an event
--Which if the following statements will set RandNum to a value between 1 and 3,
inclusive?
a. RandNum = myRand.Next(1,3);
b. RandNum = myRand.Next(0,3);
c. RandNum = myRand.Next(1,4);
d. RandNum = myRand.Next(0,4);
e. None of these - -c. RandNum = myRand.Next(1,4);
, --What is the value of float.Parse("3.8").ToString("0.00")?
a. 3.8
b. 3.80
c. 4
d. 03.80
e. None of the above - -b. 3.80
--What does the following expression result in:
txtText1.Text = txtSalary.Text + txtBonus.Text + txtOvertime.Text;
Given that the values entered for txtSalary is 400, txtBonus is 50 and
txtOvertime is 0
a. 450
b. 40050
c. 400500
d. 4500
e. 400 - -c. 400500
--What does the following expression result in (myVar is an integer with int
myVar = 0;):
myVar = int.parse(txtSalary.Text) + int.parse(txtBonus.Text) +
int.parse(txtOvertime.Text);
Given that the values entered for txtSalary is 400, txtBonus is 50 and
txtOvertime is 0
a. 450
b. 40050
c. 400500
d. 4500
e. 400 - -a. 450
--Which of the following statements declare the variables a and b as type
integer?
a. a = 0: b = 0;
b. int a; b=0;
c. int a & b;
d. int a, b;
e. None of these - -d. int a, b;
--Which of the following correctly demonstrates continuing a string on a second
line in the code window to keep the code in one screen instead of scrolling to the
right?
a. "This is a string " +
"This is the 2nd line";
b. "This is a string " and
"This is the 2nd line";
c. "This is a string " & &
"The is the 2nd line"
d. "This is a string " :
"This is the 2nd line";
Solutions.
In C#, you can simulate rolling two dice by selecting a random number between
1 and 6 to represent each die roll and then adding them together to get the dice
total. Let,s say that we developed a program to do this and we rolled the pair of
dice 50 times and recorded the results of each roll on a sheet of paper. Can we
just select one random number between 2 and 12 and achieve the same
experimental results for the 50 rolls as rolling two die and adding them?
a. No, It's not possible to get the same experimental results with one random
number
b. Yes, using the same scaling as before
c. Yes, if the Visual C# code is written to scale the single random number
between 2 and 12
d. Yes, if the random number is selected using myRand.Next(2,13); - -No, It's not
possible to get the same experimental results with one random number
--What property of a Label control would you need to set to change the words
displayed in the Label on the form?
a. the Text property
b. the Name property
c. the Captain property
d. the Word property
e. None of these - -a. the Text property
--Which of the following is the best name for a text box that will hold a person's
age within a Visual Studio .NET project, keeping in mind the recommended
naming conventions?
a. Form1
b. txtAge
c. txtText1
d. Age
e. None of the above - -b. txtAge
--When the user clicks a button, ______ is raised.
a. an event
b. a setting
c. a method
d. a property - -a. an event
--Which if the following statements will set RandNum to a value between 1 and 3,
inclusive?
a. RandNum = myRand.Next(1,3);
b. RandNum = myRand.Next(0,3);
c. RandNum = myRand.Next(1,4);
d. RandNum = myRand.Next(0,4);
e. None of these - -c. RandNum = myRand.Next(1,4);
, --What is the value of float.Parse("3.8").ToString("0.00")?
a. 3.8
b. 3.80
c. 4
d. 03.80
e. None of the above - -b. 3.80
--What does the following expression result in:
txtText1.Text = txtSalary.Text + txtBonus.Text + txtOvertime.Text;
Given that the values entered for txtSalary is 400, txtBonus is 50 and
txtOvertime is 0
a. 450
b. 40050
c. 400500
d. 4500
e. 400 - -c. 400500
--What does the following expression result in (myVar is an integer with int
myVar = 0;):
myVar = int.parse(txtSalary.Text) + int.parse(txtBonus.Text) +
int.parse(txtOvertime.Text);
Given that the values entered for txtSalary is 400, txtBonus is 50 and
txtOvertime is 0
a. 450
b. 40050
c. 400500
d. 4500
e. 400 - -a. 450
--Which of the following statements declare the variables a and b as type
integer?
a. a = 0: b = 0;
b. int a; b=0;
c. int a & b;
d. int a, b;
e. None of these - -d. int a, b;
--Which of the following correctly demonstrates continuing a string on a second
line in the code window to keep the code in one screen instead of scrolling to the
right?
a. "This is a string " +
"This is the 2nd line";
b. "This is a string " and
"This is the 2nd line";
c. "This is a string " & &
"The is the 2nd line"
d. "This is a string " :
"This is the 2nd line";
