The typedef keyword in C is used to give a new name or alias to an existing data type, making code shorter, more readable, and easier to manage. It is especially useful when dealing with complex or frequently used data types like structures. Instead of writing struct Point every time you declare a variable, you can define a simpler alias using typedef. For example,

typedef struct {

int x, y;

} Point;

With this definition, you can create structure variables using Point directly Point p1;

This improves code readability and is convenient when dealing with large programs that use structures frequently. It also reduces the chance of typing errors and makes the syntax cleaner. You can also use typedef for other data types such as pointers, arrays, or even function pointers. Overall, typedef is a powerful tool in C that contributes to writing cleaner and more maintainable code.