CODEWITHSUNDEEP
javaaddition
Sankar Karthi
Sankar Karthi

Reputation: 355

Adding two numbers that were declared as char type in java how it is posible?

If the single quotes are removed in the declaration it is showing 11

class Sample
{
    public static void main(String ar[])
    {
         char v1='5';
         char v2='6';
         System.out.println(v1 + v2);
    }
}

Output: 107

Upvotes: 2

Views: 102

Answers (2)

erickson
erickson

Reputation: 269747

In Java, a char is a 16-bit, unsigned integral type. When used in arithmetic operations, they are "promoted" to int operands with the same value.

The Unicode character '5' has a value of 53, and '6' has a value of 54. Add them together, and you have 107.

Upvotes: 5

that other guy
that other guy

Reputation: 123510

You can get the numeric equivalent of a char using Character.getNumericValue(char):

class Sample
{
  public static void main(String ar[])
  {
    char v1='5';
    char v2='6';
    int i1 = Character.getNumericValue(v1);
    int i2 = Character.getNumericValue(v2);
    System.out.println(i1 + i2);
  }
}

The function maps chars like '5' to numbers like 5.

Fun fact: it also works with other numbering systems like '๕', the Thai number 5.

Upvotes: 2

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