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Ok thanks, must be a bad book then (Practical C Programming by Steve Oualline).

Thanks that did it. But could you please explain to me why I should avoid global variables and put them inside main? Because in the book I'm reading they always have them global outside main.
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Hi I just started to learn programming and while doing an exercise in the book I'm reading I decided to expand it a little. The exercise was to code a program that converts a number of minutes into a...