Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• • Declare a function named “main()”.
  • ○ Declare the variable “amount” and assign “0.0” for this variable.
  • ○ Declare the variable “value” and assign “0.0” for this variable.
  • ○ Declare the variable “count” and assign “0”for this variable.
  • ○ Declare a “try” suite.
  • ○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.
  • ○ Use the “for” loop to perform the iteration.
    • ■ Increment “count” variable to count the iteration of the loop.
    • ■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.
    • ■ Add all the values and assign the total to the variable “amount”.
  • ○ Close the file “numbers.txt”.
  • ○ Calculate the average.
  • ○ Display the average of the numbers stored in the variable “average”.
  • ○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.
  • ○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.
  • ○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.
  • ○ Call the function “ main()”.