C Program to Find Power of a Number

Flow Control
If-else Statement in C
Programs on if-else
Switch Case in C
Switch case Programs
Conditional Operator
While loop in C
Do-while loop in C
While vs do-while
For loop in C
Break keyword in C
Continue keyword in C
Break vs Exit in C
Goto keyword in C
☕️ Flow Control Programs
Largest in 3 Numbers
Find Grade of student
Find the absolute value
Vowel or Consonant
Leap Year Program
Simple calculator in C
Check Odd or Even 
Roots of Quadratic Equation
Find Reverse of Number
Factors of a number in C
Generate Multiplication table
Find Power of a Number
Find GCD and LCM
Find factorial of Number
Count Number of Digits
Sum of digits in Number
Sum of N Natural Numbers
Sum of Squares of Natural No.
Find Sum of Odd Numbers
Find the Sum of Series
Find Fibonacci series in C
Sum of the Fibonacci series
Sum until enters +ve numbers
Sum of max 10 no. & Skip -ve
☕️ C Conversion Programs
Celsius to Fahrenheit
Fahrenheit to Celsius
Decimal ↔ Binary
Decimal ↔ Octal
Octal ↔ Binary in C
☕️ Number Programs in C
Prime Number in C
Strong Number in C
Krishnamurthy Number
Neon Number in C
Palindrome number
Perfect Number in C
Armstrong Number
☕️ Pattern Programs in C
Pattern programs in C
Printing pattern using loops
Floyd’s triangle Program
Pascal Triangle Program
Pyramid Star Pattern in C
Diamond Pattern Programs
Half Diamond pattern in C
Print Diamond Pattern
Hollow Diamond Pattern
Diamond Pattern of Numbers

Power of any number bn given as b*b*…..*b (n-times). Here b is called base and n is called the exponent. Here we will write the C program to find the power of a number.

Example:-

22 = 2*2 = 4
33 = 3*3*3 = 27
53 = 5*5*5 = 125

Write a c program to find power of a number using while loops. the base number (>0) and exponent (>=0) is taken from the test cases.

C Program to Find Power of a Number using while loop

 #include<stdio.h>
 int main()
 {
     int base, exponent;
     long power=1;

     printf("Enter base and Exponent: ");
     scanf("%d %d",&base,&exponent);

     while(exponent!=0)
     {
         power *= base; //power= power  * base
         exponent--;
     }

     printf("Result = %ld\n", power);

     return 0;
 }

Output:-

Enter base and Exponent: 3 4
Result = 81

Explanation:-

At start base=3, exponent=4
from while loop,
4!=0 true power=1*3=3 and exponent=4-1=3
3!=0 true power=3*3=9 and exponent=3-1=2
2!=0 true power=9*3=27 and exponent=2-1=1
1!=0 true power=27*3=81 and exponent=1-1=0
0!=0 false 
Finally power = 81

In the while loop, we can also use increment operators instead of the decrement operator.

C program to find x power y using for loop

Below is the C program to calculate power of a Number using for loop.

 #include<stdio.h>
 int main()
 {
     int base, exponent, i;
     long power=1;

     printf("Enter base and Exponent: ");
     scanf("%d %d", &base, &exponent);

     for(i=1;i<=exponent;i++)
     {
         power *= base; // power=power*base
     }

     printf("Result = %ld\n",power);

     return 0;
 }

Output:-

Enter base and Exponent: 2 3
Result = 8
Enter base and Exponent: 25 6
Result = 244140625

Explanation:- 

At start base=2, exponent=3
i=1; 1<=3 true power=1*2=2 and i++=1+1=2
i=2; 2<=3 true power=2*2=4 and i++=2+1=3
i=3; 3<=3 true power=4*2=8 and i++=3+1=4
i=4 4<=3 false
Finally power=8

Here we used the increment operator (i++), the problem also can be solved using decrement operator (i–) try it yourself.

C Program to Find Power of a Number using pow() function

Calculation of  Power is required many times. So, for fast and easy purposes pow() function is defined under standard library function math.h

 #include<stdio.h>
 #include<math.h>
 int main()
 {
     int base, exponent;
     long power;

     printf("Enter base and Exponent: ");
     scanf("%d %d", &base, &exponent);

     power = pow(base,exponent);

     printf("Result = %ld",power);
     return 0;
 }

Output:-

Enter base and Exponent: 2 3
Result = 8

We can do the same task using Recursion also:- Calculate Power of a Number using Recursion

If you are using Linux/Unix OS and getting an error from using pow() function then read it “undefined reference to sqrt (or other mathematical functions)” even include math.h header

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Flow Control
If-else Statement in C
Programs on if-else
Switch Case in C
Switch case Programs
Conditional Operator
While loop in C
Do-while loop in C
While vs do-while
For loop in C
Break keyword in C
Continue keyword in C
Break vs Exit in C
Goto keyword in C
☕️ Flow Control Programs
Largest among 3 Numbers
Find Grade of student
Find the absolute value
Check Vowel or Consonant
Leap Year Program
Simple calculator in C
Check Odd or Even 
Roots of Quadratic Equation
Find Reverse of Number
Factors of a number in C
Generate Multiplication table
Find Power of a Number
Find GCD and LCM
Find factorial of Number
Count Number of Digits
Sum of digits in Number
Sum of N Natural Numbers
Sum of Squares of Natural No.
Find Sum of Odd Numbers
Find the Sum of Series
Find Fibonacci series in C
Sum of the Fibonacci series
Sum until enters +ve numbers
Sum of max 10 no. & Skip -ve
☕️ C Conversion Programs
Celsius to Fahrenheit
Fahrenheit to Celsius
Decimal ↔ Binary
Decimal ↔ Octal
Octal ↔ Binary in C
☕️ Number Programs in C
Prime Number in C
Strong Number in C
Krishnamurthy Number
Neon Number in C
Palindrome number
Perfect Number in C
Armstrong Number
☕️ Pattern Programs in C
Pattern programs in C
Printing pattern using loops
Floyd’s triangle Program
Pascal Triangle Program
Pyramid Star Pattern in C
Diamond Pattern Programs
Half Diamond pattern in C
Print Diamond Pattern
Hollow Diamond Pattern
Diamond Pattern of Numbers

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