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Format

Name the file as complex.c and compress it in a zip/tar file.

Specification

All number should be precised to one decimal space.
Must Output the imaginary part.
If the imaginary part is as 0, the output should be 0.0i.
We use eps=1e-10

Please read the command line arguments
And please read the argv[2], argv[3], argv[4] as the corresponding a, b, c.