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I have dynamicly allocated array (via malloc) of numbers (called "double** metrix") and I need to get the right values and send them to the other function.

I can print the value rightly by using printf("%d", metrix[1][1]) but when I try something like double number; number = metrix[1][1] I get random number (probably randomly selected part of memory?).

How to use this right to get the value I need? Thank you for any help and sorry for my english.

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    double** metrix and printf("%d", metrix[1][1])...I smell trouble... Commented Nov 24, 2015 at 17:00
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    why not posting the full code you wrote, so we'll get a better perspective of what you're talking about? Commented Nov 24, 2015 at 17:01
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    Ideally you want to make a short example representing the issue you have, that way we can help you much more easily. Commented Nov 24, 2015 at 17:04
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    A minimal example that shows the unwanted behaviour is needed here... Commented Nov 24, 2015 at 17:07
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    As a start: %d stands for decimal integer, not double. What you want is %f Commented Nov 24, 2015 at 17:09

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If you use malloc function, it only allocates a block of size bytes of memory, but the content of the newly allocated block of memory is not initialized, remaining with indeterminate values.

And if you want to print a double value, please use "%f" instead "%d"

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%d stands for decimal integer, not double. What you want is %f which means (fixed) floating point

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