How i can write power base code without using pow () function in c

Question

I want to increase base value and similar power value too

Answer 1

Multiply number , the power times. Use a loop to do it.
double value = 1;
From 1 to n times, repeat
value = value * num;

Answer 2

//complete answer about this code at https://code.sololearn.com/c24WohfoM7aB/?ref=app

#include <stdio.h>

double power(double num,int p) {
double ret=num;

if(!p)return 1;
if(p<0){ret=num=1/num;p=-p;}
while(--p) ret*=num;

return ret;
}

int main()
{
int num,p;

printf("Enter number & power:\n");
scanf("%d %d",&num,&p);

printf("pow(%d,%d) = %.15f", num, p, power(num,p));
}