what are the type qualifiers in c programming

Understanding Type Qualifiers in C Programming: const, volatile,

In C programming, type qualifiers are keywords used to modify the properties of variables or data types. They provide additional information about the characteristics of variables and how they can be used in the program. There are two main type qualifiers in C: const and volatile. Here's an explanation of each:

Const Qualifier:

The const qualifier is used to indicate that a variable's value cannot be modified after it has been initialized. It's a way to make a variable "read-only." The const qualifier is often used to declare constants or to ensure that a variable remains unchanged throughout a program's execution. For example:

const int x = 5; // x is a constant with a value of 5
const float pi = 3.14159; // pi is a constant with a value of 3.14159

volatile Qualifier:

The volatile qualifier informs the compiler that the value of a variable can be changed by sources external to the program. This is typically used for variables that might be modified by hardware or other threads in a multi-threaded program. Using volatile ensures that the compiler doesn't optimize away reads or writes to the variable. For example:

volatile int sensorValue; // sensorValue may change unexpectedly, so use volatile