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The following integer operations should be supported.
"+" for addition
"-" for subtraction
"*" for multiplication
"/" for division
"%" for modulus/remainder
"^" for exponentiation (use the pow function from the math library)
If the operation cannot be performed (e.g., division or modulus by zero, unknown operator, etc.) a message should be displayed, as per the example outputs.
It is assumed that overflow or underflow will not happen.
8. Starter program
You are provided with the following starter program in file operations.c.
Do not remove any comment that starts with three slashes.
Here is the C code.
You are to fill in the missing parts of the program according to the work requirements (see above).
In the comments at the top, you are to fill in the author (your name), help received (person and type of help), and pseudo-code parts which are not in the solution (usually provided, but you need to add them). Remove the parentheses too.
9. Possible solution
Begin solution
Here is a possible solution to the above problem. Note: Once a solution is provided, or the day before the next class, further submissions for this work receive no credit.
End solution
10. Examples of input and output
Here are some examples of input and output for the above program code.
Here is an example input from file input1.txt.
For the above example input, here is the expected output.
Here is an example input from file input2.txt.
For the above example input, here is the expected output.
Here is an example input from file input3.txt.
For the above example input, here is the expected output.
Here is an example input from file input4.txt.
For the above example input, here is the expected output.
Here is an example input from file input5.txt.
For the above example input, here is the expected output.
Here is an example input from file input6.txt.
For the above example input, here is the expected output.
Here is an example input from file input7.txt.
For the above example input, here is the expected output.
Here is an example input from file input8.txt.
For the above example input, here is the expected output.
11. Pseudo-code
Pseudo-code is a "false" code. It is not really code, but a simplified English explanation that is somewhat similar to code. Pseudo-code is useful for understanding what a program does. For this work, the following can be used as the pseudo-code. Adjust if needed.
Note: Only some essential details are included. Some details, such as input, prompts, input echo, and obviously needed output are omitted.
The best way to copy-paste pseudo-code that includes indented code (e.g., with tabs) is as follows (in the code file) using a multi-line comment.
/*
(pasted pseudo-code here)
*/
12. Processing
It is best to separate input, processing and output into different parts of a program.
Since C has limited string handling capabilities (they can get complex), some processing involving string processing is moved to the output section of the code.
For this work, the output contains the result but errors during processing need to be output as messages during the processing.
13. Scoring rubric
CS 101 - A4 : Asmt#4: Arithmetic operations
Your grade: _ / 40
[LATE] Late or redo penalty: _ / -40
[SUBMIT] Not submitted properly: _ / -40
[RUN] Does not compile, run-time crash, etc.: _ / -40
[ETHICS] Ethical issues: _ / -40
[HEADER] Header comments not done as required: _ / -20
[STYLE] Inconsistant style or indentation: _ / -20
[CODE] Code guidelines ignored: _ / -40
[XCODE] Code used not yet covered: _ / -20
[REMOVED] Triple slash comments removed: _ / -20
[ADDED] Code added outside of marked areas: _ / -20
[OUTPUT] Functional requirements met: _ / 40
[CREDIT] Extra credit: _ / +8
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