What are the uses of double and float in the C language?

In the C language, both double and float are data types used to store floating-point numbers, but there are some differences between them. Below are the applications of double and float:

1. Float is a single-precision floating point number, typically used for storing decimals, able to store approximately 6 to 7 significant digits. Float is generally used to save memory space, especially in situations where a large amount of floating point numbers need to be stored.
2. A double is a double-precision floating-point number, typically used to store floating-point numbers with large values, capable of storing approximately 15 to 16 significant digits. Doubles are commonly used for calculations that require higher precision, such as scientific and financial calculations.

In practical applications, typically double type is chosen for higher accuracy and range, while float type can be chosen to save memory space.