gcc -Wall -o pow attempt.c of:

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

int main(void)
{
	double base = 2, power = 3;
	
	printf("\n 2^3 = %f\n", pow(base, power));

	return 0;
}

gives

/tmp/ccUYHZeh.o: In function `main':
attempt.c:(.text+0x3c): undefined reference to `pow'
collect2: ld returned 1 exit status