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Plzz help.
write a C++ program to find the factorial of a number using keyboard input.
 one year ago
 one year ago
Plzz help. write a C++ program to find the factorial of a number using keyboard input.
 one year ago
 one year ago

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ajprincessBest ResponseYou've already chosen the best response.1
Suppose if the entered number is 5 then your output should be as follows. 5*4*3*2*1=120. How do u do this.
 one year ago

adhokshajBest ResponseYou've already chosen the best response.0
int n; // this is user input long fact = 1; for (int i = n; i>0; i) { fact *= i; } cout<<fact; NOTE: Validate input (n>=0) before for loop.
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
output will b only 120 right?
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
My coding is this #include<iostream> using namespace std; void disfactorial(); int main() { disfactorial(); system("PAUSE"); return 0; } void disfactorial() { int num, fact=1; cout<<"Enter the number:"; cin>>num; for(int i=num;i>1;i) { fact=fact*i; } cout<<fact<<endl; }
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
When I enter 5 I get the output as 120. I want it to display 5*4*3*2*1=120. Hw can I edit my code to display this?
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
A suggestion would be to implement your user interaction within the main: int main() { int fact; cout<<"Enter the number:"; cin>>num; fact = disfactorial(num); cout<<"The factorial of " + 5 + " is " + fact<<endl; system("PAUSE"); return 0; } Then define your disfactorial() method like this: int disfactorial(num) { int fact = 1, i; for (i = 1; i<num; i++) { fact =fact * (i+1); } return fact; } The output of the for loop, if the user enters 5, should be: i=1: 1*2 i=2: 2*3 i=3: 6*4 i=4: 24*5
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
To fix your code to produce 120 as the output you would just need to change your loop: from this: for(int i=num;i>1;i) { fact=fact*i; } to this: for(int i=1;i<num;i++) { fact=fact*i+1; }
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
I dnt get the correct output.
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
I had some compilation errors, mixed java and c++ syntax. Try this: #include<iostream> using namespace std; int disfactorial(int x); int main() { int fact, num; cout<<"Enter the number:"; cin>>num; fact = disfactorial(num); cout<<"The factorial of " << 5 << " is " << fact<<endl; return 0; } int disfactorial(int num) { int fact = 1, i; for (i = 1; i<num; i++) { fact =fact * (i+1); } return fact; }
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
input: 5 output: Enter the number:The factorial of 5 is 120
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
I got the same output for my coding above.
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
I changed ur code and only compiled bt didnt get the output.
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
If you are getting 120 as the factorial of 5, which it is, then I must have misunderstood the question, I apologize. What were you having difficulty with?
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
I want the output like this 5*4*3*2*1=120 Nt jst 120
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
OH! You are looking at formatting..
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
With the smaller numbers it will be simple to just hard code them, but you could always create an array the size of your "num" and set each index as you step through your for loop. However you should consider that if this code were to be used on a large number, say 50, you would have text scrolling across the screen.
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
it's true. Thanxxxxxxxxxxxx a lot
 one year ago

agdgdgdgwngoBest ResponseYou've already chosen the best response.0
the factorial grows really fast, so you get integer overflow once you go after about 20! or something
 one year ago

agdgdgdgwngoBest ResponseYou've already chosen the best response.0
I wonder if C++ has bignums included in the library.
 one year ago

eSpeXBest ResponseYou've already chosen the best response.1
I'm fairly certain they have long unsigned double, that's fairly big. :)
 one year ago
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