“c – What does “”1e”” mean?”

In the context of C programming or general computing, 1e is a shorthand for scientific notation and means 1 × 10 raised to the power of some exponent.

For example:

1e3 means

1×103

=1000

1e-2 means

1×10 −2 = 0.01

In C, such notation is used to represent floating-point literals, particularly when dealing with very large or very small numbers.