22 lines
739 B
C++
22 lines
739 B
C++
#include "hello_world.hpp"
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#include <cstring>
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#include <string>
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namespace fundamentals {
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auto greet(const char* name) -> const char* {
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const auto n = std::string(name);
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const auto c = "Hello, " + n + "!";
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// LESSON: Never return pointers to local objects -> dangling -> undefined behavior
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// NO! --> return c.c_str();
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// The destructor will be called when c goes out of scope, destroying the object and freeing its memory
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// This is shit C++ and should use std::string instead as a return value
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const auto p = new char[c.length() + 1]; // Give space for the null terminated pointer
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strcpy(p, c.c_str());
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return p;
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// TL;DR -> Never use C-style strings if possible
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}
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} // namespace fundamentals
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