To the power of in C? [duplicate]

Question

So in python, all I have to do is

print(3**4)  

Which gives me 81

How do I do this in C? I searched a bit and say the exp() function, but have no clue how to use it, thanks in advance

Answer 1

You need pow(); function from math.h header.
syntax

#include <math.h> double pow(double x, double y); float powf(float x, float y); long double powl(long double x, long double y); 

Here x is base and y is exponent. result is x^y.

usage

pow(2,4);    result is 2^4 = 16. //this is math notation only    // In c ^ is a bitwise operator 

And make sure you include math.h to avoid warning ("incompatible implicit declaration of built in function 'pow' ").

Link math library by using -lm while compiling. This is dependent on Your environment.
For example if you use Windows it's not required to do so, but it is in UNIX based systems.

Answer 2

you can use pow(base, exponent) from #include <math.h>

or create your own:

int myPow(int x,int n) {     int i; /* Variable used in loop counter */     int number = 1;      for (i = 0; i < n; ++i)         number *= x;      return(number); }