Program x to power y in C

Introduction 

The meaning of x to the power of y is , a variable x is multiply for y time. Lets take a simple example a variable x is hold 2 and y hold 5. Now the answer is 2 multiply for 5 times such as..

z=2*2*2*2*2;

z=32

Method-1: 

Design a Algorithm in c

Step-1 : Take two value in variable x and y by user input.

Step-2 :  Use pow function in  "C" , which is available in math.h header file.

Step-3 :  Take another variable Z for holding answer of the x to the power of y.

Step-4 : Print z 

Step-5 : End of the program.

Program :

#include<conio.h>
#include<stdio.h>
#include<math.h>
void main()
{
int x,y,z;
printf("enter X value");
scanf("%d",&x);
printf("Enter Y value");
scanf("%d",&y);
z=pow(x,y);
printf("output of the x power y is%d",z);
getch();
}

Output

Method-2 : Using recursion

Algorithm of the program

Step-1: Step-1 : Take two value in variable x and y by user input.

Step-2: Create a function  and pass values of x and y  to the function.

Step-3 : Call same function for y times 

Step-4 : Return function 

Program

#include<conio.h>
#include<stdio.h>
#include<math.h>
void main()
{
int x,y,z;
clrscr();
printf("enter X value");
scanf("%d",&x);
printf("Enter Y value");
scanf("%d",&y);
z=fun(x,y);
printf("output of the x power y is%d",z);
getch();
}
int fun(int a,int b)
{
if(b>=1)
{
return a*fun(a,--b);
}
else
return 1;
}

Output

Method -3:Using third variable

Algorithm:

Step-1: Take two value in variable x and y by user input.

Step-2: Run for loop for y times.

Step-3 : Take third variable z with 1 value

Step-4 : Multiply x with z for y times in for loop

Step-5 : Take output value in z variable

Step-6 :  End of the program

Program

#include<conio.h>

#include<stdio.h>

#include<math.h>

void main()

{

int x,y,i,z=1;

clrscr();

printf("enter X value");

scanf("%d",&x);

printf("Enter Y value");

scanf("%d",&y);

for(i=0;i<y;i++)

{

z=x*z;

}

printf("output of the x power y is%d",z);

getch();

}

Output