WEEK04
May 31 and June 2

This page contains lectures, examples and assignments for week 4 of the class "Introduction to Scientific Programming".

Lectures:

• Lecture #7, "More About WHILE Loops"
• Lecture #8, "FOR Loops"

Examples:

• arrow.cpp, a program which uses a FOR statement to follow for 20 seconds the path of an arrow shot into the air; a BREAK statement terminates the loop if the arrow hits the ground before 20 seconds have elapsed.
• checkerboard.cpp, uses a pair of nested FOR statements to print the locations on a chessboard and on a checkerboard.
• deck.cpp, uses a pair of nested FOR statements to print the cards in a deck.
• gates_plusplus.cpp, is a revised version of the "gates.cpp" program which uses as many increment and decrement operators as possible.
• grades.txt, a text file containing values that can be added up by the sum_eof program using a command like sum_eof < grades.txt.
• leapyear.cpp, a program which uses a FOR statement to print the years between 1900 and 2000 which were leap years.
• lunch.cpp, a program which uses a WHILE statement to read lunch bills. By using a counter variable, the program only repeats the loop exactly seven times, and then totals the bills.
• sqroot_check.cpp, a program for estimating the square root of a number, using a WHILE statement, and using a counter to avoid infinite loops.
• sqroot_do_while.cpp, a program for estimating the square root of a number, using a DO...WHILE statement.
• sqroot_while.cpp, a program for estimating the square root of a number, using a WHILE statement.
• sum_100.cpp, a program which sums the integers from 100 to 199 using a FOR loop.
• sum_counter.cpp, a program which must sum an unspecified number of real numbers. The first data item entered by the user must be exactly the number of values to be summed.
• sum_eof.cpp, a program which must sum an unspecified number of real numbers. If it is used interactively, the user terminates the data with CTRL-D. If it reads numbers from a file, it detects the end of file automatically.
• sum_minus.cpp, a program which must sum an unspecified number of real numbers. It assumes that the last number entered is a special value of -1, which is not added to the total, but simply signals the end of data.
• three_heads.cpp, a program in which we are flipping 3 coins over and over. Each flip costs 25 cents, we win each time we get three heads, and we want to play until we win 10 times. The program uses a WHILE statement, and a "success" counter to keep track of how many wins we have achieved.
• trig_table.cpp, a program which uses a FOR statement to print out the sine and cosine of angles between 0 and 90 degrees, with 5 degree increments.
• truck_for.cpp, a program which uses a FOR statement to find the maximum brick load a truck can take over a bridge that has a weight limit.
• twelve.cpp, a program which uses a FOR statement to print out which integers between 1 and 12 are divisors of 12.

Assignments:

• In class exercise #4, on Tuesday: Compute the Fibonacci Sequence.
• Program Homework #2 is due on Thursday. Please mail your program and output to Detelina, or turn in printed copies.
• Program Homework #3, to be assigned on Thursday.

You can go up one level to the ISC course page.