In this tutorial you will learn about the C Program to Find Power of a Number and its application with practical example.
In this tutorial, we will learn to create a C program that will find the power of a given number using C programming.
Prerequisites
Before starting with this tutorial we assume that you are best aware of the following C programming topics:
- C Operators
- C Loops.
- Basic input/output functions.
Logic behind to find power of any number without using pow() function in C programming.
Example
Input:
take value of base : 3
take value of exponent : 3
Output:
Input base is : 3
Input exponent : 3
So power of any number basen given as base*base*…..*base (n-times). Here base is called base and n is called the exponent.Here we will write a C program to find the power of a given number.
Program to find power of any number.
In this program we will find power of any given number using for loop. We would first declared and initialized the required variables. Next, we would prompt user to input the number and power of number .Then we will find the power of given number.
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#include<stdio.h> int main() { int base,expo,i; //declaring variables long power=1; printf("Enter base \n: "); scanf("%d", &base); //taking base printf("\nEnter Exponent \n: "); scanf("%d",&expo); // taking power for(i=1;i<=expo;i++) // traverse the loop till exponent { power *= base; // power=power*base // multiplying base with power } printf("Result = %ld\n",power); // required output return 0; } |
Output
Note: The above program will works only if the exponent is a positive integer (number).
In the above program, we have first declared and initialized a set variables required in the program.
- base = it hold the value of base
- expo = it will hold the power
- power= it will hold the result.
Let see the logic of program step by step.
Step 1. Input base and exponents from user, and put it in two variables base and expo.
Step 2. Initialize another variable that will store power power=1.
Step 3.within the loop value of i start from 1 to expo, increment loop by 1 in each iteration. The structure look like.
Step 4.For every iteration the value of power multiply with base.
Step 5.Finally we get the answer in Power.
In this tutorial we understand how to write a program without using Power Function In C to calculate power of a number.
