fflush()

Flushes buffers to disk when writing a file opened with fopen() for write or append. Returns a value indicating whether buffers were successfully flushed, where:
0 = successful, and 1 = not successful

Syntax:

fflush(file);

where

fileID is the file value, created with fopen().

Example:

decl fID;
fID = fopen("hello", "W");
    fflush(fID, "hello there");
fclose(fID);

Where Used:

Measurement Expressions (Data Display equations and Schematic MeasEqns), Schematic, Layout, Simulation, GUI