C program for power of an integer

Hi,

you set p, and you perform calculations with q that you always initialize to 1, so that's normal...

--

A+ Blux

"Fools dare everything. It's even how we recognize them"

```c #include<stdio.h>
#include<math.h>
int main()
{
int a;
int p; int q; int i = 0;
printf("saisir l'entier");
scanf("%d",&a);
printf("saisir la puissance");
scanf("%d",&p);
/*calcule de puissance*/
if(p==0)
q=1;
else
{
q=1;
while (i<=p)
{
q=q*a;
i++;
}
}
printf("la puissance de l'entier est %d",q);
return 0;
}
/*vous verifier avec la bibliothèque math.h si non vous l'enlevez,si sa ne marche pas mon voyez un mail sur khader.chiheb@gmail.com pour rechercher une autre solutios*/ ```</math.h></stdio.h>

```c void main () {
int i;
int p;
int q;
int a;
printf("Enter an integer");
scanf("%d",&a);
printf("Enter the power");
scanf("%d",&p);
if (p==0)
q=1;

else

{
for (i=1; i<=p ; i++);
q=q*a;
}
printf("%d\n",q);
system ("pause");
}

You made 3 mistakes,

1) you initialized q=1 each time (after the else) so it needs to be removed
2) as I told you when we want to make a condition if p is 0 we need to put the equality sign twice so if(p=0) becomes if (p==0).
3) 3 to the power of 5 for example is 3 x 3 x 3 x 3 x 3 (5 times) but you do for (i=1; i<=p ; i++);
q=q*a; (the result = result x integer) that's WRONG. to calculate a power you need to put q=a*a; (the result = integer x integer).

There you go, this code works and I hope my explanations are clear, you need to understand what you write (translate it in your head into sentences) ```

Hello,
yes, as Blux said, you always initialize q=1, so you can remove the q=1 under the else, and the "if (p=0)"
by the way, there are 2 == to mean that "if the variable p EQUALS 0"

After making the indicated changes, the program performs a multiplication, for example if I enter 3 and 2,
the program displays 6 while it should normally display 9.

Yes, but multiplying something by 1, even an infinite number of times, does not change its value...

1 is the identity element of multiplication...

--

A+ Blux

 "Fools will try anything. That's how you recognize them." 

So what should I do??

stop initializing q=1 even when the exponent is different from 0...

--

A+ Blux           

 "Stupid people dare anything. That's how you recognize them"

Hi,

q instead of res ;-)
--
106485010510997108

This program doesn't display anything!!

Thank you, it works great!!!!!!!!!!

At worst, but really at worst, there's a little thing in the math.h library called pow(a,b) that does your power calculation automatically, but hey, I'm just saying, so it's better if I shut up ;)