Errors in C Programming

What Are Errors In C Programming?

Do you know What are errors in C programming? Are you wondering, how to overcome these errors? Well, in this article we will discuss the type of errors with codes explained. 

Being the most popular programming language, C language is learned by thousands of school and college students around the world. So, it’s quite often for a coder to get stuck in C programming while building a project. So, if you have any doubts related to any C programming concepts then you can use CodingZap’s best C programming help services, and we guarantee you top grades in your coursework.

In every programming language, there are certain types of errors present. These errors help to write the code in a prescribed way. While writing a piece of code, programmers may create some type of error. Then the compiler will aware the programmer about the error. Hence, the programmer can resolve the error.

But what is the need to learn about different error categories? If you are new to C Programming then you can learn C in 5 easy steps.

But for now, let’s assume one scenario;

Suppose, as a programmer, you are writing code. At any point in time, the compiler is aware that you have made one mistake. But you can’t identify from the compiler what type of mistake you have done. As you don’t know the categories of the errors. Hence, your program gets stuck.

That is why it is needed to know the categories of errors.

But is there any way to know about the errors in C programming? Yes! There are.

 

Let's learn about Errors in C Programming.

 

What are Errors in the C Program? Read Below

 

Errors are like the illegal type of expression written by the programmer. Every programming language like C can able to read (or compile) such types of codes that are written in a given format.

If the programmer by any chance writes the code in a different format, then the compiler will throw an error. These errors will guide the programmer to resolve the problem which happened in a particular line of the code.

It is very obvious that if you only know the English language & some person is talking with you in the French language. You can’t able to know what he is talking about. The same thing goes for the compiler also. They can only know a particular language & grammar format. Writing differently will cause an error.

 

What are the Types of Errors in C?

 

In the C programming language, there are mainly four types of errors present. Depending upon the mistakes made by the programmers these categories have been created. Let’s make a list of those errors:

  1. Compile Time Error
  2. Run Time Error
  3. Linker Error
  4. Logical Error

Let’s know each of the errors one by one in a detailed way. 

 

What are Compile Time Errors in C?

 

Overview of the concept:

As the title says that this type of error occurs when the code is compiling. After compilation of any code that code runs. This type of error is oftentimes termed the Syntax Error.

In this type of error, programmers generally made mistakes in the syntax structure. This means they forget to provide the end braces (‘}’), forget to provide the semicolons, etc. Sometimes, syntax errors related to the loops can create such problems.

These errors should be fixed before the code runs. If these errors are present in the code, it restricts the compilation of the code. Also, if you are getting an error building a max heap in C then you can learn more in our article.

So, now let’s take an example where a syntax error problem happened to for loop.

General Syntax of For Loop: for(statement;condition;updation)

Example:

// Declaring The Header File

#include <stdio.h>

// Calling main Function

void main()

{

              // Declaring The Variable

              int i;

              // For Loop Defect-Comma Instead of Semicolon

              for(i=0;i<10,i++)

              {

                             // Simple Statement

              printf("Hello C Language");

              }

}

Steps of the program to know about the Complier time errors in C Programming:

  1. Declare the required header file inside of the program before developing the main function.
  2. Inside the main function declare one defective for loop where the syntax error should be present.
  3. Inside of that for loop, try to print anything random data.

Let’s look at the output of the above code. Hence, we come to know about the Complier time errors or syntax errors in C Programming.

Output:

Output for Compile time errors in C programming

Here, the output clearly shows where we have made the errors. It is showing instead of using a semicolon, a simple comma is used. So, the output is correct here.

 

What are Runtime Errors in C?

 

Overview of the concept:

As the title says, this type of error occurs when the compiler tries to run the code & provide the output. This means this type of error successfully skips the compilation step. But it gets stuck while running the code.

This type of error includes arithmetical problems, declaration problems, etc. This means, that if you declared a variable as Integer & trying to a large value user input from there will prompt an error.

Also, if you declare a variable as Integer & working with it as a Float, then it will provide a run time error.

This type of error can successfully pass through the compile time as the programmers have written them correctly. Their syntax is correct but their work is not applicable. Many students get stuck while memory allocation in C so we have written a detailed article on it and learned how to implement it.

Let’s take an example where we try to divide one number using zero. This type of code will prompt a run time error. While implementing an Inline function in C, sometimes we get runtime errors too. As the code has been written correctly given syntax, that is why it will not prompt compile time error.

Example:

// Declaring The Header File

#include <stdio.h>

// Calling main Function

void main()

{

              // Declaring The Variable

              int num = 5;

              // Run Time Error-Trying To Divide by Zero

              printf("result = %d", num/0);

}

Steps of the program to know about Runtime errors in C:

  1. Start the implementation of the program by taking the default necessary header file.
  2. Declare one integer value in the program & provide a sample value to it.
  3. Now, try to print the result value by dividing that integer number by zero which flags a runtime error.

Let’s look at the output of the above code. Hence, we come to know about Runtime errors in C Programming.

Output:

Output example of Runtime error in C language

In this case, the output gives the warning message & it will point to the states where we have done the mistake. Here, it is pointing to where we want to divide a number by zero.

 

What are Linker Errors in C?

 

Overview of the concept:

This type of error happens when the linking process is being performed by the compiler. The linking process is a very important & very beginning process. Before compilation linking is done. In this process, the code is converted to the linker file which helps to compile & run the code.

This type of error occurs when programmers write illegal header files & main functions. Header files & main functions play a crucial role in the lining. So, making mistakes while writing those, will create the linker error.

Let’s take an example where the main function is written in the wrong way.

Example:

// Declaring The Header File

#include <stdio.h>

// Calling Wrong main Function

void mainn()

{

              // Simple Statement

              printf("Hello C Program");

}

 

Steps Of The Program to know about the Linker errors in C:

  1. The necessary Stdio. h header file will be included inside of the code to move ahead further.
  2. Now, we are placing the word ‘mainn()’ instead of ‘main()’ which is the wrong one.
  3. For decoration purposes, we are giving a random statement inside of that, but it will not execute.

Let’s look at the output of the above code. Hence, we come to know about the Linker errors in C Programming. Similarly, if you are not familiar with Stack implementation then you can read another article on How to implement Stack using linked list in C programming and learn more about it.

Now, let’s take a look at the output screenshot below.

Output:

Output for Linker errors in C programming

From the output any novice can understand that, there will be some issues in the word ‘main’ as it is highlighted. And it is marked in the Red color because; it is a serious type of error one can make.

 

What are Logical Errors in C?

 

Overview Of The Concept:

This type of error occurs when the programmer writes something unknowingly. This type of problem is faced by beginners. Sometimes they write in such a format that desired output not even appeared on the console. Then the programmer completely must go through the code & find out the mistake.

But sometimes, for some mistakes, the compiler prompts an error. Here, we have taken such an example where an incorrectly written assignment operation will prompt an error.

Correct Syntax: variable1= variable2 + variable3

Example:

// Declaring The Header File

#include <stdio.h>

// Calling main Function

void main()

{

              // Declaring The Variables

              int x, y, z;

              // Wrong Syntax For Assignment Operation

              x + y = z;

}

Steps of the program to know about the Logical errors in C

  1. Without making any intentional mistake, include the necessary header file inside the program.
  2. Now, you should create the main function normally what we usually do.
  3. Declare some integer variable inside of the program. But there is no need to provide any value.
  4. Now, try to assign the summation value of two variables to the third one by using a wrong assignment statement.

Let’s look at the output of the above code. Hence, we come to know about the Logical errors in C Programming.

Output:

Output for logical errors in C

The above output shows that the assignment statement has not been implemented properly. That is the reason, it is marked as an error & what we are supposed to do is mentioned in the output.

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Conclusion:

 

As we saw errors perform an important role in the learning process. If you are learning other programming languages like Java, python then you can also learn about how to fix key errors in Python.

Errors perform a special role when developers write some big-size codes to perform a bigger output. It helps to guide their mistakes. If you struggling with errors in your coding homework then you can hire top-notch coding help at CodingZap.

So, hope you have liked this piece of article. Share your thoughts in the comments section and let us know if we can improve more.

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