Write a c program to find product of all even numbers between 10 t0 30

#include <stdio.h>

int main(void) {

 unsigned long n = 1;

 for(unsigned long i=10; i<=30; i+=2) {

   n *= i;

 }

 printf("%lu",n);

 return 0;

}

Explanation:

The output is: 111588212736000

The answer will take 47 bits, so you have to use 64-bit longs. An int is 32 bit thus will give the wrong answer due to a numeric overflow.

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