Help with pow()

Code:

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#include <stdio.h>
#include <math.h>

int main()
{
      int base, exp;
      scanf("%d", &base) ;
      scanf("%d", &exp) ;
      printf("%d ^ %d = %d\n", base, exp, pow(base,exp)) ;
      return 0;
}

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The above code prints the output of pow as a 0. What did I do wrong? I tried %f also, but that gave me a number with alot of zeroes after the decimal. How can I get a normal integer without casting pow? Thank you.

Quote:

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Originally Posted by jedi_jinn

Code:

---

#include <stdio.h>
#include <math.h>

int main()
{
      int base, exp;
      scanf("%d", &base) ;
      scanf("%d", &exp) ;
      printf("%d ^ %d = %d\n", base, exp, pow(base,exp)) ;
      return 0;
}

---

The above code prints the output of pow as a 0. What did I do wrong? I tried %f also, but that gave me a number with alot of zeroes after the decimal. How can I get a normal integer without casting pow? Thank you.

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Code:

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printf("%i ^ %i = %i\n" , base, exp, pow(base, exp));

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Try that.
Or, you can always error check.

Code:

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int main()
{
      int base, exp, powr;
      scanf("%d", &base) ;
      scanf("%d", &exp) ;
     
      powr = pow(base, exp);
     
      if(powr != 0)
      {
            printf("%i ^ %i = %i\n", base, exp, powr) ;       
      }
      else
      {
            printf("Error calculating pow()");
      return 0;
}

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Quote:

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Originally Posted by jedi_jinn

What did I do wrong?

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^ is an exlusive or.

Quote:

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Originally Posted by Dave_Sinkula

^ is an exlusive or.

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Oh thats right, the only way i can think of printing it, would be to...

Code:

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int main()
{
      int base, exp;
      double powr;
      char expc;
      scanf("%i", &base) ;
      scanf("%i", &exp) ;
     
      powr = pow(base, exp);
     
      if(powr != 0)
      {
            printf("%i %c %i = %d\n", base, expc, exp, powr);       
      }
      else
      {
            printf("Error calculating pow()");
      return 0;
}

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What is the return value of pow? [Hint: it's not an int, with which %d corresponds.] Have you ever looked up what %g does?

Quote:

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Originally Posted by Dave_Sinkula

What is the return value of pow? [Hint: it's not an int, with which %d corresponds.] Have you ever looked up what %g does?

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It returns a double doesn't it? ;x

Do you know where I can find information on format descriptors like %d, %g, %e, %f?

Google. It's free, fun, and fascinating. Do a Google today!