0e5

0e5 is a numeric literal used in several programming languages and data formats that follows scientific notation. It encodes the value zero as a mantissa of zero and exponent of five: 0 × 10^5 = 0.

Because the significand is zero, the value equals zero regardless of the exponent; however, the literal is typically treated as a floating-point constant rather than an integer. In most languages, 0e5 evaluates to 0.0. Some languages differentiate sign on zero, so -0e5 could yield -0.0, while 0e5 remains nonnegative.

Usage and compatibility: 0e5 is accepted in many languages that support decimal floating literals, including Python, JavaScript, Java, C and C++, and formats such as JSON. It demonstrates how scientific notation can express zero as a floating-point value without a decimal point.

Notes: While 0e5 is mathematically identical to 0, its existence as a literal can affect type inference or parsing rules in a given language. In practice, it is largely a convenience or a test case for parsers and numeric formatting.

Related topics include scientific notation, floating-point numbers, and the concept of zero (positive and negative zero).