CpointfunProd, C (gcc)

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//gcc 7.4.0

//write a function that returns product of n values f(1), f(2).....f(n)
//this code is created by Rezaul Hoque on June 02,2021
//please contact at jewelmrh@yahoo.com
//note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their  learning;

#include <stdio.h>

int p(int (*)(int), int);
int square(int);
int sum(int);
//the product function ,p,evaluates the function to which pointF points at each value of i and returns product of these n-values
int p(int (*pointF)(int m), int n)
{
int prod= 1;
for(int i=1; i<=n; i++)
prod *= (*pointF)(i);
return prod;
}
int sum(int b)
{
return (b+b);
}
int square(int b)
{
return (b*b);
}

int main ()
{
printf("%d\n",p(sum,3));//it returns prod of sum(1) * sum(2)*sum(3)
printf("%d\n",p(square,3));//it returns product of square(1)*square(2)*square(3)
return 0;
}

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Compilation time: 0.32 sec, absolute running time: 0.15 sec, cpu time: 0 sec, memory peak: 5 Mb, absolute service time: 0,55 sec