### Discussion :: Functions - Point Out Correct Statements (Q.No.3)

Dheeraj said: (Jul 13, 2011) | |

Why return is used here? |

Sreedhar said: (Jul 14, 2011) | |

In for loop, what is the value of num |

Usha said: (Oct 15, 2011) | |

How it calculates fraction value? |

Rohit said: (Apr 27, 2012) | |

@usha If num =3 \* 3! = 6 *| i=1 , f=1 Executes the for loop now i=1, 1<=3,post increment so i= 2 for next time f= f*i =1*1 =1 --------returns f as 1 Next time after for loop 1*2 = 3-------------returns f as 2 After for loop 2*3 = 6 ---------------returns f as 6 Now for loops get failed in condition So f=====6 \* ans *\ |

Parth said: (May 16, 2012) | |

How it calculates factorial values? |

Srikanth said: (Dec 26, 2012) | |

What is the value of num variable? |

Hari said: (Feb 14, 2014) | |

How it calculate the factorial values here please explain step by step? |

Nikky said: (Apr 17, 2014) | |

What is the value of num? |

Aman said: (Jan 27, 2015) | |

But there is no value for number? |

Bharu said: (Mar 4, 2015) | |

Can anyone please explain this? |

Tripti said: (Mar 25, 2015) | |

I don't understand why to use num? |

Hari said: (Sep 5, 2015) | |

I can't understand. |

Praveena said: (Jun 27, 2016) | |

Suppose num=4; In the program given that >> f=1 >>for(i=1;i<=4;i++) f=f*i; let us evaluate the for loop step 1: f=1*1=1 step 2: f=1*2=2 step 3: f=2*3=6 step 4: f=6*4=24 IN EACH STEP VALUE OF " f " is saved So factorial of 4 is 24. |

Helloworld said: (Oct 24, 2016) | |

It does not calculate the factorial of all the numbers. 0! is not calculated so None of the above must be the correct answer. |

Rohan said: (Jun 9, 2018) | |

According to me, it is; long fun(int num) { int i; /* declare variable i as int.... */ long f=1; /* declare and initialize variable f as long with value 1 */ for(i=1; i<=num; i++) f = f * i; /* for loop is used Let's take an example... -> 10 is given as arguments in the function fun... [First Time] - > i is initialized with 1 , 1<=10 ,condition true - > f = 1*1 [Second Time] - > i is incremented and becomes i = 2 , 2<=10 , condition true - > f = 1*2 = 2 and further till i = 10, 10<=10 , condition true - > f = 1* 2*3*4*5*6*7*8*9*10 */ return f; /* because it returns an float variable .... */ } |

Niks Wabale said: (Dec 13, 2018) | |

It gives the correct result, even if we put 0 value then also for loop won't work and we return the value of f and previously it is initialized to 1 and 0!=1. So it works perfectly fine for 0 value also. |

Sakshi Munya said: (May 5, 2019) | |

There is no 'main' function. Then, how it's execute? |

Sanprince said: (May 5, 2019) | |

You can take any value for num. In for loop, the statement written, it will behave like factorial so answer is C. Take any value you will understand. |

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