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Write a Java Program to Calculate the Power of a Number
PROGRAM: Java Program to Calculate the Power of a Number
/* Java Program to Calculate the Power of a Number */
1: Calculate power of a number using a while loop
class Main {
public static void main(String[] args) {
int base = 3, exponent = 4;
long result = 1;
while (exponent != 0) {
result *= base;
–exponent;
}
System.out.println(“Answer = ” + result);
}
}
2: Calculate the power of a number using a for loop
class Main {
public static void main(String[] args) {
int base = 3, exponent = 4;
long result = 1;
for (; exponent != 0; –exponent) {
result *= base;
}
System.out.println(“Answer = ” + result);
}
}
3: Calculate the power of a number using pow() function
class Main {
public static void main(String[] args) {
int base = 3, exponent = -4;
double result = Math.pow(base, exponent);
System.out.println(“Answer = ” + result);
}
}
4: Compute Power of Negative Number
class Main {
public static void main(String[] args) {
// negative number
int base = -3, exponent = 2;
double result = Math.pow(base, exponent);
System.out.println(“Answer = ” + result);
}
}
