Please tell me What Is Factorial ?

Question

Plz Tell Me what Is Factorial? And Also Program In 'C'

Answer 1

The ! is used in math to denote "factorial". Examples:

2 factorial = 2! = 1 x 2

3 factorial = 3! = 1 x 2 x 3

7 factorial = 7! = 1 x 2 x 3 x 4 x 5 x 6 x 7

In general, n! = 1 x 2 x 3... x n

Programming this is straightforward, but you should do your own homework assignments, so I won't supply the program. 8-)

Answer 2

on a side note...

0! = 1; because we said so....

Answer 3

For example, 5! would be 5x4x3x2

6! would be 6 x 5 x4 x 3 x 2

here's a little function that calculates factorial.

double factorial(int x)

{

double sum = x;

for(int i = x-1; i > 1; i--)

sum = sum * i;

return sum;

}

factorials get big fast, byw, so be aware of this in your code.

Answer 4

The ! is used in math to denote "factorial". Examples:

0! = 1

2 factorial = 2! = 1 x 2

3 factorial = 3! = 1 x 2 x 3

7 factorial = 7! = 1 x 2 x 3 x 4 x 5 x 6 x 7

In general, n! = 1 x 2 x 3... x n

pgm for factorial will be

double factorial(int x)

{

double sum = x;

for(int i = x-1; i > 1; i--)

sum = sum * i;

return sum;

}

call the function in the main function and pass the value to it.ok.

Answer 5

for ex:3!=3*2*1

         5!=5*4*3*2*1

find factorial of 6 i.e n=6

while(n<=1)

{

    sum=n*1;

    n=n-1;

}

printf("The factorial of 6 is :%d",sum);