Video tutorial to find the factorial of a number: if the user enters 3, then the factorial is 1 * 2 * 3 i.e., factorial = 6
This logic must be handled with a c++ program.
Full Source Code
#include
#include
void main()
{
int fact = 1, N;
clrscr();
cout< >N;
for( int i=1; i< =N; i++ )
fact = fact * i; // OR fact *= i;
cout<
Here the for loop stars from 1 and not 0. As anything multiplied by 0 would also be zero.
fact *= i; is the compact representation of fact = fact * i;
Video Tutorial: Factorial in cpp
Output:
Enter a number
5
Factorial of 5 is 120
View Comments
my program is just giving factorial for 1 and 2…..why it is giving wrong output for 3 and above numbers?…here is the code
#include
using namespace std;
int main()
{
int n,i,j;
int fact=1;
cin>>n;
for(i=1;i>i;
for(j=1;j<=i;j++)
{
fact=fact*j;
}
cout<<fact<<endl;
}
system ("pause");
return 0;
}
@domy, There's no need of using two for loops.
Just follow the coding in our blog post / video and it must work properly.