5 Things You Must Know in C Programming Language

By VictoriaD Taylor

July 16, 2019   •   Fact checked by Dumb Little Man

basics of c programming language

Programming rests at the center of different technological advancements we witness in this decade. Operating systems, mobile applications, and many other technologies are based on programming.

Over the years, the computing landscape has also witnessed many programming languages and new languages continue to emerge every day. Capabilities of programmers to learn these languages and implement them in practical solutions can attract new career opportunities.

Other than the scope for career opportunities, learning different programming languages could also help in developing unique applications that can change the way we live.

The following discussion focuses on one of the basic programming languages, i.e. C, and outlines five important things in C, which every person should know before learning it. The discussion would be supported by a brief outline of the definition of the C programming language and the reasons to learn to program in C.

The Basics of Programming Languages

basic of c programming language

The starting point of this discussion must be from a basic impression of coding and programming language. Coding is the process in which programmers tell the computer what to do. Computers don’t understand our language and they are not capable of doing something on their own.

Therefore, a programmer has to write a code to tell the computer what to do. The code is compiled and turned into machine code which is interpreted by the computer followed by the execution of code. This is the basic function of a programming language. Even if numerous programming languages are existing now, every one of them follows these steps for executing code.

Defining C:

C is one of the basic programming languages which are closer to the actual machine code computers run on. The code in C programming is very similar to machine codec. This is why people refer to it as a low-level procedural language.

This means that the computer finds it easy to understand the code written in C but difficult for users to understand. A slight error on behalf of the user can cause a complete system breakdown, showing that C programming is highly complicated.

Importance of Learning C

So, why should you learn C programming?

For starters, you could find C almost anywhere in the computing landscape. Majority of computer operating systems are written using C. This is also found in the case of many smartphones and tablets. Microcontrollers are programmed using C and you could find them even on the display of your microwave’s door.

In addition, learning C is the foundation for learning other programming languages, such as C++, C# and Objective C as well as Python. This is because these languages were built directly on top of C.

Most important of all, expertise in C is a promising skill that can land up promising jobs for a programmer. You would also find learning C as a proven way to develop a better understanding of programming, the working of a computer, and the effect of code on systems.

The Basics of C Programming Language

c programming language basics

Here are five important things you should know before you start learning this programming language.


If you are a beginner in programming languages and C is your first encounter, then you would know about operators, probably for the first time. Operators are defined as symbols in C which provide instructions to the compiler for executing a task. Each operator is associated with a predefined command. The most basic example of an operator in C programming is the “+”. For example, you can use the “+” operator as follows:

Total = principal + interest;

This code would add up the values assigned to ‘principal’ and ‘interest’. However, you would find different operators such as arithmetic, logical, and assignment operators. A clear understanding of each of the operators could help in learning the core programming concepts in C quickly.

Data types

Data is the lifeline of computing systems. It is classified into various types. The success of a programmer lies on his capability to set one data type apart from the other. Therefore, you should know about the basic data types used in C language in order to avoid any confusion at the later stages.

For example, the number 5 could be classified as an integer while the written character 5 could be a character. This implies that programmers have to learn the data types and ways of assigning them to variables as an important part of C programming.

C does not detect errors for you

Another important fact about C programming which every learner should know is that it would not complain at all. Even if you make mistakes, C would not complain and continue its work. So, you have more chances of ending up with a lot of bugs.

You could try manual debugging for a few lines of code but not in the case of complex and incredibly lengthy codes. Other programming languages can prompt us in the case of any errors in the code. However, that feature isn’t in C. This is why it is essential to pay attention to developing each line of the code accurately.

Standard libraries

Despite being a low-level programming language, C is equipped with standard libraries that can be used for developing programs. The standard libraries have definitions of different macros, variable types, mathematical operations, and location-specific data.

The programmer could use libraries by including them in the code. The most basic example of the standard library in C language is the “stdio.h”, which is the standard input/output header file. It helps in outputting to the console.

You can find 15 standard libraries in C programming language and detailed awareness of these libraries can adequately support your learning.


The final yet most important fact about C programming is debugging. As evident from one of the points mentioned above, C would not give any warnings about errors. You have to find them yourself. Therefore, you could use debuggers such as GDB for finding out any errors.

Debuggers break the code line by line and find out errors in the code accurately. Therefore, it is highly necessary to learn to debug among the other basics that you can associate with the C programming language.

The discussion presented above gives you an idea about C programming language and the reasons to learn it. The most important highlights of the discussion were the five basic things every programmer should know about C programming — operators, variable types, debugging, standard libraries, and the limitations of C in detecting errors in code.

VictoriaD Taylor

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