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- Which one of the following functions calls is vulnerable to buffer overflow? Choose an answer A fgets() B sprint() C strncat() D strncpy()2-Determine the output of the following functions (You must show your works), please explain the steps and do not copy from other answers • (cdaar '( ((orange grape((orange grape) apple () ()) banana)) apple banana)) • (cddaar '( ((orange grape((orange grape) apple () ()) banana)) apple banana)) • (cadadr'( orange ((()) (grape () (apple)) banana)))You should not make any changes to DPQueue.h. ■ You should not remove any functions from DPQueue.cpp, and you need to: ● Fill in the implementation of all the "stub" functions in the file (those with output statements containing the message "??? not implemented yet"), and ● Provide any additional documentation where appropriate. The file SuccessfulAutoTest.txt shows how the output for a test with complete success should look like. ► Referring to it should give you a purview of the number/kind of tests involved. #endifusing namespace std; namespace CS3358_FA2022_A7{ // CONSTRUCTORS AND DESTRUCTOR p_queue::p_queue(size_type initial_capacity) { cerr << "p_queue() not implemented yet" << endl; } p_queue::p_queue(const p_queue& src) { cerr << "p_queue(const p_queue&) not implemented yet" << endl; } p_queue::~p_queue() { cerr << "~p_queue() not implemented yet" <<…
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