c - segmentation fault core dump after program runs and displays output -

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i have made changes program started with: reason getting segmentation error. happens after output , think may have free statement in destroy function. ran through gdb , told me trying access 0x000000d memory location weird because can print out memory location of struct , shows different. know have missed small. appreciated thanks!

had take m code down since on going project in school replies post on once have grade.

you have undefined behavior in code.

take line:

struct person *userone=inputvalues(userone);

here define variable userone , initialize calling inputvalues function, pass uninitialized pointer. means inside inputvalues function, temp pointer uninitialized, , value indeterminate leading said ub when dereference pointer.

one possible solution define structure variable not pointer, , use when calling inputvalues, or dynamically allocating structure , pass function. or redesign program not pass argument function @ all, , let function allocate structure.

using uninitialized variables detectable compilers, , can issue warnings it. if don't such warning might want consider enabling more warnings.


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