> I am going to use trigmetric functions, > so I need the value of Pi in LabWindows. > Please, teach me the value in LabWindows.
#define PI 3.1415926535897932384626433832795028841971
You can find definitions for PI and other useful constants in cvi/toolslib/toolbox/toolbox.h. Search for "Constants and Conversions" in the header file.