Input and Output

1
Input and Output
2
Output

• Prompt
• A message displayed to the user indicating what
  they are to enter.
• Should be clear and exact on what you want.
• write
• used for output, no return
• writeln
• has a return for next line to be printed on CRT.

3
Input

• readln
• used to get the information from the user into a
  variable.
• YOU MUST PUT THE VARIABLE NAME!!!
• readln(name)
• Can be used without a variable to hold the output
  on the screen.
• readln

4
Formatting Output

• In a writeln you can combine literals and
  variables by seperating them by commas.
• writeln(Hi , name, , it is nice to meet you!)

5
More on Formatting

• You can increase the number of spaces that a
  variable uses.
• writeln(Name10, Date10)
• Name Date
• For real numbers you can also state the number of
  places after the decimal.
• writeln(Ave, ave51)
• Ave 95.6

6
Assignment Statement

• is read becomes equal to.
• variable expression.
• ave (num1num2)/2
• operators follow math order of operations
• ( plus), (- minus), ( multiply),
• (/ division), (divquotient of integer
  division),
• (modremainder of integer division)

7
Assignment

• Questions for chapter 4 are due Friday.
• Lab test on Friday 1/2 period 6 on page 110.
• Written Test on Friday ch 3 and 4
• Program due next Friday
• Do the 5 steps for the following assignment.
• Number 4 on page 111. Be sure to be colorful and
  creative with your output.
• Ask the user their name and include a title on
  the report. Like Lucis Calorie Counter.