Thread: please help to find the power of number using recursion ?

hello am new here so am no sure if am suppose to post this question here but please help

my question is

Write a c program to find out the power of a number using recursion. The base number should be an odd number and it must be between 11 and 99. The power should be an even number and it must be between 2 and 20 ??

Originally Posted by genius010

hello am new here so am no sure if am suppose to post this question here but please help

my question is

Write a c program to find out the power of a number using recursion. The base number should be an odd number and it must be between 11 and 99. The power should be an even number and it must be between 2 and 20 ??

This isn't even a question, this is an assignment with a couple question marks thrown onto the end.

Code:

#include <stdio.h>

 

//function for calculating power

long int getPower(int b,int p)

{

    long int result=1;

    if(p==0) return result;

    result=b*(getPower(b,p-1));  //call function again

}

void main()

{

    int base,power, temp, temp1;

    long int result;

     

    printf("Enter value of base: ");

    scanf("%d",&base);

    temp=base;

    if(temp<=99 && temp>=11)

    {

       

         printf("Enter value of power: ");

         scanf("%d",&power);

    

         result=getPower(base,power);

     

         printf("%d to the power of %d is: %ld\n",base,power,result);

     

        

   }

   else

   {

   printf("Base should be between 11 and 99\n");

   }

}

these are the code and it is working but i only need when i enter even number it must show me message to enter odd number and the opposite in the power
also the power doesn't show message enter between 2 and 20 ?

Originally Posted by Salem

I guess that's why you're copying other people's code then.
C program to calculate power of a number using recursion - C solved programs

To be honest, you need to evaluate why you're even on this course if all you're going to do is copy/paste other people's work without understanding it. Assuming you're paying for your education, you're just wasting your time and money. The piece of paper at the end will be worthless.

Here's a free snippet

Code:

if ( x % 2 == 0 ) {
  // x is even
} else {
  // x is odd
}

unfortunately i admit that you are right but am just want learn something form c programming because my job is network administrator not coding

however it still not working

Code:

‘x’ undeclared (first use in this function)
            if ( x % 2 == 0 ) {
                 ^
even.c:54:17: note: each undeclared identifier is reported only once for each fu

Perhaps you should be learning C from a book, where you are taken through the most basic of concepts first.

Tutorials (such as this) may also help you get started (hint: the problem you are having is explained on that page).