FACTORIAL OF LARGE NUMBER LIKE 100!

#1

i cant find any way to obtain the code for this problem pls suggest some method hint or explain the approach to form the code for this problem i try my own just give some hint aur approach ki kaisen try karrein

#2

Create an array ‘res[ ]’ of MAX size where MAX is number of maximum digits in output.
Initialize value stored in ‘res[ ]’ as 1 and initialize ‘res_size’ (size of ‘res[ ]’) as 1.
Do following for all numbers from x = 2 to n……

a) Multiply x with res[ ] and update res[ ] and res_size to store the multiplication result.

multiply(res[ ], x)

Initialize carry as 0.
Do following for i = 0 to res_size – 1 ……

a) Find value of res[i] * x + carry. Let this value be prod.
b) Update res[i] by storing last digit of prod in it.
c) Update carry by storing remaining digits in carrying.

Put all digits of carry in res[ ] and increase res_size by number of digits in carry

#3

sir iss approach mein merko ye doubt hein humne res[max] array banadii manlete hein ki max=500 hein phir humne res[0] =1 thats ok tooo bakki cells prr too garbage value hoogi
aur hum same array ko multiply function mein bhi bhejege uska effect nhi hooga program prr

#4

Hi, it will be by default 0 value…
https://ide.codingblocks.com/s/627075 refer line 12 there i have tried to show the same by printing some random indexes…

#5

perr sir kaisen 0 hua humne tooo khalli res[0]=1 define kiya hein bakki tooo 0 kaisen when we define array like this arr[500]={0);then only it gives other indexes value 0
int n = 100;
int arr[n];
arr[0]=0;
cout<<arr[1]<<" "<<arr[2];
return 0;
output
PS G:\c++> .\random.exe
1878001568 1878003816

#6

#define MAX 2000
ye likhne se vo default set hojata hai… i have made implemented in code u sent just now https://ide.codingblocks.com/s/627082

#7

thank you sir now i am able to get the code tysm for the help

#8

is there anything else or shall i mark it as resolved?

#9

resolved sir mark it as resolved i am able to get the code now

#10

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