Output: As you can see there is a number of digits after decimal point, you can round of this and limit the digits after decimal point using the format specifier in printf() method as shown in the example 1 above. ( "The circumference of the circle is:" circumference) * because a user can enter radius in decimals *We are storing the entered radius in double Static Scanner sc = new Scanner(System.in) * the result will be calculated based on the provided radius value. User will be prompted to enter the radius and But especially in C, if we multiply two long numbers of 32 bits, we get the least significant digits of the multiplication result, 64 bits (Numerical Recipes by William H. * Program to calculate area and circumference of circle We are using Scanner class to capture the user input and store it into a variable. (Basically, instead of using pi.getNextDigit (), use csprngWithPrearrangedSeed.getNextDigit (). This example excludes the whole part of pi and generates only first 50 digits of fractional part, and separates them with a comma. If you are just experimenting with crypto, you should still use a real CSPRNG to generate the digits. Include Whole Part Write pi digits with the prefix '3.'. In this program, the radius value is entered by the user. Also, Pi is not a good source of entropy. ( "\nCircumference is: %.2f",circumference) formula to calculate circumference of circleĭouble circumference= Math.PI * 2*radius You need to specify theĭouble area = Math.PI * (radius * radius) * Program to calculate area and circumference of If we use the print() method then the program displays the value upto several decimal points, however there is nothing wrong using that as well. You may be wondering why we are using printf() method instead of print() or println(), this is to round of the output upto two decimal points, the format specifier %.2f rounds of the decimal points to two decimal points. In this program, radius value is specified in the program and we are calculating the area and circumference using the above mentioned formulas. Program to calculate area and circumference of Circle Here π value is 22/7 or 3.14 (rounding of the output of 22/7 upto 2 decimal places).ġ. Formula for area and circumference of circle Area of circle = πr 2 We will see two programs, in the first program, the radius value is initialized in the program and in the second program, the radius value is entered by the user. Time Complexity: O(N logN loglogN), where. In this tutorial, you will learn how to calculate area and circumference of circle in Java. Check if i is even then sumsum 4/d, else sumsum-4/d Increment d by 2 every at every iteration Print sum.
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