chr to int code example

Example 1: java get an int from a char

char charValue = '2';
int intValue = Character.getNumericValue(charValue); // 2

Example 2: c convert char to int

int i = (int)(c - '0');

Example 3: converting char to int in c++

#include <sstream>

using namespace std;

int main()
{
    stringstream str;
    
    str << "1";

    double x;
    str >> x;
}