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Instead, it is a combination of two separate operators, i. These should not return anything nor accept any arguments.
You can register up to 32 such functions. To swap two variables without using additional space or arithmetic operators, you can simply use the xor operator.
To avoid this, use the defensive programming approach. So whenever you mistakenly write the following. They are not. Here, function testFunction cannot return a value because the return type is void.
The volatile keyword is used for creating volatile objects. A volatile object can be modified in an unspecified way by the hardware.
Since, number is a constant variable, the program cannot change it. However, hardware can change it since it is a volatile object. It takes a lot of effort and cost to maintain Programiz.
We would be grateful if you support us by either:. Disabling AdBlock on Programiz. We do not use intrusive ads. List of all Keywords in C Language This tutorial provides a brief information on all 32 keywords in C programming.
Keywords in C Programming auto break case char const continue default do double else enum extern float for goto if int long register return short signed sizeof static struct switch typedef union unsigned void volatile while Description of all Keywords in C auto The auto keyword declares automatic variables.
For example: The continue statement skips the certain statements inside the loop. We would be grateful if you support us by either: Differences between C and Embedded C Differences between C and Embedded C The basic additional features of the embedded software Data types The data type refers to an extensive system for declaring variables of different types like integer, character, float, etc.
The embedded C software uses four data types that are used to store data in the memory. The size and range of different data types on a bit machine is given in the following table.
The size and range may vary on machines with different word sizes. Data types Keywords There are certain words that are reserved for doing specific tasks. These words are known as keywords.
They are standard and predefined in the Embedded C. Keywords are always written in lowercase. These keywords must be defined before writing the main program.
The basic keywords of an embedded software are given below: Keywords sbit: This data type is used in case of accessing a single bit of SFR register. Bit: This data type is used for accessing the bit addressable memory of RAM 20h-2fh.