What is the function of using unique_ptr or shared_ptr in C++

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C.149: use unique_ptr or shared_ptr to avoid forgetting to destroy objects created with new

Reason (reason)

Avoid resource leakage.

Example (sample) void use (int I)

{

Auto p = new int {7}; / / bad: initialize local pointers with new

Auto Q = make_unique (9); / / ok: guarantee the release of the memory-allocated for 9

If (0 < I) return; / / maybe return and leak

Delete p; / / too late

}

Enforcement (implementation recommendations)

Prompts you to initialize the bare pointer using the result of new.

Marks the case where local variables are destroyed.

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