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javamathpowexponential

Raising number to fractional power java

I used the following code:

double pow = 3/7;

double num = 85;

System.out.println(Math.pow(num, pow));

Expected result:

6.71...

The output is 

1.0

Any idea why?

Solution

  • 3/7 is evaluated to 0, since you are dividing two integers, so Math.pow(num, pow) becomes Math.pow(num, 0.0) which is 1.0.

    Change it to 3.0/7 in order to get a floating point result.