CS2263-Ex2-IfThenElseLoopsStr-S23-v1

CS2263 S23 Exercise 2- IfThenElse, Loops and Strings Create a visual studio 2022 windows form project (not another type of project) named <yourfullname>2263Ex2, and a doc file named <yourLastName>2263Ex2.doc for your written answers to some of the problems. Zip and submit on the course moodle page when working correctly. Use appropriate textbox, button, etc prefixes and names, with great descriptions in the buttons. 1. (15 points) Add a button, labels, a textbox (named txtIn) and a label (lblOut), that when given a year in the txtIn box, indicates whether it is a leap year in lblOut. Use IfthenElses and Boolean logic to determine whether the year is a leap year, not some built in gadget (it actually can be done as a single Boolean expression). A year is a leap year if it is evenly divisible by 4, except it is not a leap year if it is evenly divisible by 100, except it is a leap year if it is evenly divisible by 400. Thus 1996 and 2000 were leap years, but 1900 was not. 2. (5 points) What input must be place into txtIn to the following procedure for it to display 22 in txtOut with the button is depressed? Place your answer in the word file. private void btnTask2_Click( object sender, EventArgs e) { int n, sum = 0; n = int .Parse(txtIn.Text); for ( int i = 1; i <= n; i = i + 3) { sum += i; } txtOut.Text = sum.ToString(); } 3. (5 points) What input must be place into txtIn to the following procedure for it to display 120 in txtOut with the button is depressed? Place your answer in the word file. private void btnTask3_Click( object sender, EventArgs e) { int n, i = 1, product = 1; n = int .Parse(txtIn.Text); while (i < n) { i++; product = product * i; } txtOut.Text = product.ToString(); } 4. (15 points) Fibonacci’s sequence starts with values 1 and 1. The next value in the sequence is formed by summing the previous two values. Thus the third value is 1+1=2, the fourth is 1+2=3, the fifth is 2+3=5, etc. Thus, the sequence is 1, 1, 2, 3, 5, 8, 13, 21, …. Create a button with code that will obtain a positive integer from txtIn (test to make sure positive) and will display the sum