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how to write a program for a0/n!+a1x/(n-1)!+a2x^2/(n-2)!....a^nx^n?

program for sum of factorail....
a0/n!+a1x/(n-1)!+a2x^2/(n-2)!....a^nx^n?
Nov 27 '13 #1
3 1276
Banfa
9,065 Expert Mod 8TB
Use a for loop, for each loop iteration calculated the value of the current term and then add the result to a variable that was initialised before the loop started. At the end of the loop the variable will contain your result, assuming that the maths remained with-in the bounds of the platform.
Nov 27 '13 #2
stdq
94 64KB
It might be a good idea to use a function that calculates the factorial of a given non-negative integer n (n!).
Nov 27 '13 #3
donbock
2,426 Expert 2GB
Be careful, n doesn't have to be very large before n! is too large to fit in the standard C integral types.
  • 9! > minimum value of USHRT_MAX
  • 9! > minimum value of UINT_MAX
  • 13! > minimum value of ULONG_MAX
  • 21! > minimum value of ULLONG_MAX
Nov 27 '13 #4

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