The factorial of a positive integer n is equal to 1*2*3*...n. Factorial of a negative number does not exist. For example: 4! C Programming Language; Python Programming; Ruby Programming Examples; Java Programming Examples; Factorial with Memoizing. C Program For Factorial Of A Number Using For Loop. The Knapsack problem An instance of the knapsack problem consists of a knapsack capacity and a set of items of varying C++ Program to Find Factorial of a Number using Dynamic Programming #include using namespace std; int result[1000] = {0}; int fact(int num) { if (num >= 0) { result[0] = 1; for (int i = 1; i <= num; ++i) { result[i] = i * result[i - 1]; } return result[num]; } } int main() { int num; while (1) { cout<<"Please enter a number:"; cin>>num; if (num == 0) break; cout<<"Factorial of a number is:"<