Let’s say we have the following two values.double val1 = 20.932; double val2 = 11.67;Let us now format these floating-point numbers. Firstly, we are formatting euler’s number withMath.exp(). After that, we have also evaluated log. The %.3f you can see here is what we used for formatting the numbers.System.out.printf("exp(%.3f) = ... Read More

The Double isInfinite() method returns true if this Double value is infinitely large in magnitude, false otherwise.Let’s say we have the following Double values.Double val1 = new Double(3/0.); Double val2 = new Double(0/0.);Use the isInfinite() method now. The return value is a boolean.val1.isInfinite(); val2.isInfinite();The following is the final example.Example Live Demopublic ... Read More

To convert String to float, use the valueOf() method.Let’s say we have the following string value.String str = "0.8";Converting the string to float.Float floatVal = Float.valueOf(str).floatValue();The following is the complete example.Example Live Demopublic class Demo {    public static void main(String args[]) {       String str = "0.8";   ... Read More

To compare Java float arrays, use the Arrays.equals() method. The return value is a boolean. Let’s say we have the following float arrays −float[] floatVal1 = new float[] { 3.2f, 5.5f, 5.3f }; float[] floatVal2 = new float[] { 8.3f, 8.8f, 9.2f }; float[] floatVal3 = new float[] { 6.2f, ... Read More

The following is an example to swap strings.Example Live Demo#include #include int main() {    char st1[] = "My 1st string";    char st2[] = "My 2nd string";    char swap;    int i = 0;    while(st1[i] != '\0') {       swap = st1[i];       ... Read More

exit()The function exit() is used to terminate the calling function immediately without executing further processes. As exit() function calls, it terminates processes. It calls the constructor of class only. It is declared in “stdlib.h” header file in C language. It does not return anything.The following is the syntax of exit()void ... Read More

The following is an example to compute combinations using factorials.Example Live Demo#include using namespace std; int fact(int n) {    if (n == 0 || n == 1)    return 1;    else    return n * fact(n - 1); } int main() {    int n, r, result;    coutn;    coutr;    result = fact(n) / (fact(r) * fact(n-r));    cout

Generally, we use header files in C/C++ languages to access the built-in functions like int, char, string functions. The function printf() is also a built-in function which is declared in “stdio.h” header file and it is used to print any kind of data on console.Here is an example to print ... Read More

To work with the GregorianCalendar class, import the following package −import java.util.GregorianCalendar;To get the day of week in month, use the following field −cal.get(Calendar.DAY_OF_WEEK_IN_MONTH)Above, cal is the GregorianCalendar object we created before −GregorianCalendar cal = new GregorianCalendar();The following is an example −Example Live Demoimport java.util.GregorianCalendar; import java.util.Calendar; import java.util.Date; public class ... Read More

A static function in C is a function that has a scope that is limited to its object file. This means that the static function is only visible in its object file. A function can be declared as static function by placing the static keyword before the function name.An example ... Read More