Prerequisites
• Completed labs for Lab#1.x thru Lab#5.x
• Completed reading Chapter 1-5
Objectives
• while loops exercise
• do-while loops exercise
• for loops exercise
• Input validation using loops.
• relational and logical expressions
• flags
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Lab Assignment #6.1
Using loops, write a program to read the number of rows (1-9) and columns (1-9) from user. User input is validated and a maximum of 3 attempts for each row/column is permitted before program displays error. When successful input by user, the program will then print 3 different tables with values by iterating through Row# and Column#.
Program Flow
Step 1: Displays purpose of program.
Step 2: Prompt user for number of rows, including the current attempt number and total attempts.
Enter number of rows from 1-9 (attempts 1/3):
Step 3: Validate number of rows is from 1 to 9.
Step 4: When number of columns is NOT 1-9.
a. Print an error message stating
"Invalid number of rows. Must be 1-9. Please try Again."
b. Then print prompt again with the attempt count increased:
"Enter number of rows from 1-9 (attempts 2/3):"
Step 5: If number of attempts is exceeded, then print message and end program:
"Exceeded Attempts."
Step 6: When the user enters a valid number of rows, Prompt user for number of columns, including the current attempt number and total attempts. Entering rows also has 3 attempts.
Enter number of columns from 1-9 (attempts 1/3):
Step 7: Validate number of columns is from 1 to 9.
Step 8: When number of columns is NOT 1-9.
a. Print an error message stating
"Invalid number of columns. Must be 1-9. Please try Again."
b. Then print prompt again with the attempt count increased:
"Enter number of columns from 1-9 (attempts 2/3):"
Step 9: If number of attempts is exceeded, then print message and end program:
"Exceeded Attempts."
NOTE: DO NOT use exit(), goto, continue, break, or return statements in the middle of program to end program. Try to construct the if-statements in a way that the logic drops to end of program. There should be no exit() calls and only 1 return at end of main().
Step 10: At completion of program,
a. if successful print “Congrats”.
b. If the program did not succeed, print “Exceeded Attempts”.
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