How to check if number is a decimal?

Question

I create android app for dividing numbers.

int a,b;

int result = a/b;

if (result==decimal){

Log.v (\"result\",\"your result number is decimal\")

} else {         


        

Answer 1

int will not hold a decimal, they always take the floor of the result: for example 3 / 5 = 0 as an int. That said you can use modulo (%) to determine if decimals are being dropped.

if(a % b > 0) { // 3 % 5 = 3
    // Decimal places will be lost
}

Answer 2

You can also check if the string contains a ..

String.parseString(decimalNumber).contains(".");

Answer 3

Use the modulus operator to check if there is a remainder.

if(a % b != 0) Log.v("result", "The result is a decimal");
else Log.v("result", "The result is an integer");