c++ convert const char* to int

#include <iostream>
#include <cstdlib>

int main() {
    const char* str = "12345";
    int convertedInt = std::atoi(str);

    std::cout << "Converted integer: " << convertedInt << std::endl;

    return 0;
}

Explanation:

1. #include <iostream>: Includes the input-output stream header file for handling input and output streams.
2. #include <cstdlib>: Includes the C Standard Library header file for functions like std::atoi() used for string-to-integer conversion.
3. int main() { ... }: Entry point of the program.
4. const char str = "12345";: Declares a pointer str of type const char and assigns it the memory address of the string literal "12345".
5. int convertedInt = std::atoi(str);: Uses the std::atoi() function to convert the C-style string str to an integer and assigns the result to convertedInt.
6. std::cout << "Converted integer: " << convertedInt << std::endl;: Prints the converted integer value to the standard output.

The program uses std::atoi() from the C Standard Library to convert a C-style string (const char*) to an integer in C++.