Help with FORTRAN error message

[Daniel1992]

Homework Statement

I get the follwing error message in the FORTRAN program I am trying to code.

P(i)=(1/(sigma*sqrt(2*Pi)))*e^(-(x-xbar)^2/(2*sigma^2))
----------------------------1
Error: Invalid character in name at (1)

I assume this means there is something it doesn't like about 2*Pi but I can't work out what it is.

Any help would be appreciated.

 

[SteamKing]

1 Pi should be defined elsewhere in your program, as should the constant e.
2. the character ^ is not used for exponentiation. The double * is the proper operator, thus x*x = x**2.

 

[Daniel1992]

Well that was abvious

forgot that '**' is used to creates powers.

Thanks for that :)