how to read memory address and get its value

Is the address 0xfeafe000 valid for read? of what type is txt? How is the address of txt set?

Quote:

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Originally Posted by nur89

memcpy (txt, (char*)(0xfeafe000), sizeof(txt));
i have used it and got a segmentation fault.
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progarm recieved signal SIGSEV,segmentaion fault.
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why this happens??

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Rather than posting to this old thread that has nothing to do with your problem you should have better googled for this error message in Web... Then you would find among the first tree items this one:
https://en.wikipedia.org/wiki/Segmentation_fault