Floating-point types in C languageIn C language, floating-point types are commonly referred to as float types.According to the information I have consulted, the floating-point types in C language cannot be accurately represented, whether within their precision or beyond it. What we usually see (or read) is merely an approximate representation of the floating-point type. This is related to the precision limitations of C language’s floating-point types.IEEE754 StandardThe precision of floating-point types in C language generally follows the IEEE754 standard, which is similar to scientific notation. This means that a floating-point value in C language is typically stored using a combination of sign bit, exponent, and mantissa (in binary representation). For example, the representation of 0.1 might be:0011 1101 1100 1100 1100 1100 1100 1101.Additionally, when converting decimal fractions to binary values, they may result in infinite repeating decimals; values exceeding the precision of the mantissa will be rounded.Example Code
float f = 0.1f; // The actual storage may be an approximate value: 0.100000001490116119384765625
double d = 0.1; // Stored closer, but still cannot be accurately representedDisclaimer: The content is for reference only and does not guarantee accuracy.