- hex2dec()
- hexdec()
1 C++[ | ]
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C++
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#include <iostream>
using namespace std;
int main()
{
cout << stoi("0", nullptr, 16) << endl; // 0
cout << stoi("-a", nullptr, 16) << endl; // -10
cout << stoi("2F", nullptr, 16) << endl; // 47
cout << stoi("-fffe", nullptr, 16) << endl; // -65534
cout << stoi("FFFF", nullptr, 16) << endl; // 65535
}
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2 Java[ | ]
Java
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int a = Integer.parseInt("a", 16); // 10
int b = Integer.parseInt("2f", 16); // 47
int c = Integer.parseInt("ffff", 16); // 65535
3 PHP[ | ]
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PHP
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echo hexdec('a'); // 10
echo hexdec('2f'); // 47
echo hexdec('ffff'); // 65535
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