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C++Convert Hexadecimal String to Decimal Integer

C++Convert Hexadecimal String to Decimal Integer

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To convert a hexadecimal string (of type string) into an integer in C++, you can use the stoi() function with a base of 16. Here's an example:

#include 
#include 

int main() {
    std::string hexStr = "1A3F";  // Hexadecimal string
    int decimalValue = std::stoi(hexStr, nullptr, 16);  // Convert hex to int
    std::cout << "Decimal value: " << decimalValue>

In this code:

- The string hexStr contains a hexadecimal number.

- The function std::stoi(hexStr, nullptr, 16) converts the hexadecimal string to a decimal integer using base 16.

- The result is stored in decimalValue and printed to the console.

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