A simple cpp program to find factorial of a given number using foor loop.
Input n=5
output =120
Time Complexity is O(n)
//CPP program to find factorial of a given number
// using for loop
#include
using namespace std;
int main(){
int n,fact=1,i;
cout<<"Enter a number:"; cin>>n;
for(i=1;i<=n;i++){
fact =fact *i;
}
cout<<"Factorial is:"<<fact;
return 0;
}
output:
Enter a number:5
Factorial is:120
hellotech 