Program to find factorial of 100

[shashank kumar mittal]

Please tell me how to find factorial of 100 in c++

[Banfa]

Get a library that has a class that supports unlimited precision integers.

Do the calculation in the normal way.

You might try looking at the Boost library that is the sort of thing that they make.

[donbock]

According to Microsoft Excel:
100! = FACT(100) = 9.3 x 10^157
log-base-2(100!) = LOG(FACT(100),2 ) = 524.8

That is, you need 526-bit integer math to compute the factorial of 100.