Signs Of The Times

To profile our code, we need to compile each source file with the extra '-pg' flag of gcc, and link with the same '-pg' flag.
Running this code will generate a file named 'gmon.out'.
To view the output:
```
gprof -b
```
'Kprof' is a graphical tool to view the profiling data in a meaningful way.
Why not try it yourself, with some simple source code? (Here is how the output might look)

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