Table of exponents...

[Dangerous Dave]

the question is, user inputs a BASE a MIN EXPONENT and a MAX EXPONENT. have the program print out a table with teh correct values of the answers.

eg...

Base Exponent Answer

2 2 4
2 3 8
2 4 16
2 5 32

this is for the test data: Base = 2, MIN EXPONENT = 2, MAX EXPONENT = 5.

i have to make it WITHOUT useing the power function to show we can use while loops, sentinal and counter.

---------------------------------------------------------------------------

#include <stdio.h>
#include <stdlib.h>

void main()
{
int base, min_exponent, max_exponent, answer;
int sentinel, counter, exponent;

sentinel = 1;
answer = 1;
counter = 0;

while (sentinel == 1)
{
answer = 1;
/*Input the base, max_exponent and min_exponent*/
/*Assign base, max_exponent and min_exponent to their variables*/
printf("Please enter the base: \n");
scanf("%d",&base);

printf("Please enter the minimum exponent: \n");
scanf("%d",&min_exponent);

printf("Please enter the maximum exponent: \n");
scanf("%d",&max_exponent);

if (base >= 0 && base <= 10)
//if (min_exponent > 0 && min_exponent < max_exponent)
//if (max_exponent > min_exponent && max_exponent > 20)
{
counter = min_exponent;
answer = min_exponent;
exponent = min_exponent;
while (counter <= max_exponent)
{
//if (exponent == 0)
//{
// printf("\n%d\t0\t1\n",base);
//}
//else
answer = answer * base;
printf("\n%d\t%d\t%d\n",base,exponent,answer);
counter++;
exponent++;
}
}
else
printf("Please enter data again:\n");
/*Ask user if they want to run program [Y]es or [N]o*/
printf("Do you wish to run program again?? 1 = yes or 0 = no\n");
scanf("%d",&sentinel);
}
}

----------------------------------------------------------------------------------

any ideas whats going wrong??

thanx,

DAVE.

[swoopy]

Can you use for-loops?

#include <stdio.h> 
#include <stdlib.h> 

void main() 
{ 
   int base, min_exponent, max_exponent, answer; 
   int sentinel, counter, exponent; 
   int i;

   sentinel = 1; 
   while (sentinel == 1) 
   { 
      /*Input the base, max_exponent and min_exponent*/ 
      /*Assign base, max_exponent and min_exponent to their variables*/ 
      printf("Please enter the base: \n"); 
      scanf("%d",&base); 

      printf("Please enter the minimum exponent: \n"); 
      scanf("%d",&min_exponent); 

      printf("Please enter the maximum exponent: \n"); 
      scanf("%d",&max_exponent); 

      if (base >= 0 && base <= 10) 
      //if (min_exponent > 0 && min_exponent < max_exponent) 
      //if (max_exponent > min_exponent && max_exponent > 20) 
      { 
         answer = 1;
         for (i=0; i<min_exponent; i++)
            answer *= base;
         counter = min_exponent; 
         exponent = min_exponent; 
         while (counter <= max_exponent) 
         { 
            //if (exponent == 0) 
            //{ 
            // printf("\n%d\t0\t1\n",base); 
            //} 
            //else 
               printf("\n%d\t%d\t%d\n",base,exponent,answer); 
            answer *= base;
            counter++; 
            exponent++; 
         } 
      } 
      else 
         printf("Please enter data again:\n"); 
      /*Ask user if they want to run program [Y]es or [N]o*/ 
      printf("Do you wish to run program again?? 1 = yes or 0 = no\n"); 
      scanf("%d",&sentinel); 
   } 
}