EECS 2031 Page 1 of 1
LAB 7 ─ Command-Line Arguments
1. Specification
Write a program that accepts a set of integers as command-line arguments from the user, and then
displays the maximum, minimum and average values of the input integers.
2. Implementation
• The program to be submitted is named mmavg.c. Use the given template mmavg.c and fill in
your code. Complete functions main()in file mmavg.c.
• Note that the command-line arguments are all strings. Therefore you may need to implement a
function to convert a string to an integer to obtain the input integers. An integer could be positive
or negative. That is, it may have a + or – sign.
• Sometimes users may forget the command syntax and they may type only the command “mmavg”.
In that case, display the following reminder message:
Usage: mmavg int1 int2 int3 ...
• Other than that, assume that all inputs are valid and the number of input integers is less than 100.
No error checking is required on inputs.
• You may define your own variables inside functions main(). Do not use global variables.
• You may define and implement your own function(s) inside file mmavg.c if needed.
• Do not use any C library functions (e.g., atoi).
• To compile the program, use the following command: cc –o mmavg mmavg.c
• There must be at least a white space between the input numbers. That is how the command-line
arguments are separated.
3. Sample Inputs/Outputs
See file mmavg_io.txt for sample inputs and outputs.
Common Notes
• Complete the headers in the files to be submitted with your student and contact information.
• Assume that all inputs are valid. No error checking is required on inputs.
• You may use either pointers or array indexing or both.
