compile using the command:
gcc -Wall -std=c99 -o compute_max compute_max.c

(-o specifies the name of the executable that will be created)

This will create a file compute_max (or compute_max.exe on Windows).

You can run the program using the command

Linux: ./compute_max

Windows: compute_max.exe

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You can also compile without specifying the names of the executable:
gcc -Wall -std=c99 compute_max.c

Tthe gcc will create an executable calls a.out (or a.exe on Windows)
