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I am very new to programming. Can you please explain what these errors mean? And how I can use them to debug my code? 

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x106df59ac
#1  0x106df4d53
#2  0x7fff76a68b5c
#3  0x1059d27fd
#4  0x1059e58d0
#5  0x1059e1f8b
#6  0x1059de707
#7  0x1059de7ff
#8  0x1059dfd08
#9  0x10580734d
#10  0x10581c137
#11  0x1058995af
#12  0x1058b6b3e
#13  0x1058a11ce
#14  0x10576fb84
#15  0x10574729e
#16  0x10577b210
Segmentation fault: 11
Vladimir F Героям слава
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Inga
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  • Does this answer your question? [understanding stack trace of a segmentation fault](https://stackoverflow.com/questions/6726132/understanding-stack-trace-of-a-segmentation-fault) – Vladimir F Героям слава Jan 06 '20 at 22:09
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    Those symbols are addresses and are almost impossible to interpret directly. Compile with `-g` to get meaningful source code locations. Compile with `-g -Wall -fcheck=all` to enable warnings and runtime error checking. That can reveal many types of errors. – Vladimir F Героям слава Jan 06 '20 at 22:11
  • As @Vladimir notes, those a list of addresses. If you compiled with gfortran (which I'm guessing you did), then it also means that you don't have libunwind available. libunwind would translated some or all of the addresses to symbols. Follow Vladimir suggests for debugging the program. – steve Jan 06 '20 at 23:51

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