Errors space the problems or the faults that happen in the program, which makes the habits of the program abnormal, and also experienced developer can likewise make these faults. Programming errors are additionally known together the bugs or faults, and also the process of removing this bugs is recognized as debugging.

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These errors space detected either throughout the time of compilation or execution. Thus, the errors should be eliminated from the regimen for the successful execution of the program.

There are mainly five types of errors exist in C programming:

Syntax errorRun-time errorLinker errorLogical errorSemantic error
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Syntax error

Syntax errors are additionally known together the compilation errors as they occurred at the compilation time, or we have the right to say that the syntax errors space thrown by the compilers. These errors are mainly arisen due come the mistakes while typing or carry out not follow the syntax the the stated programming language. This mistakes are usually made by beginners only due to the fact that they are brand-new to the language. These errors can be easily debugged or corrected.

For example:


If we want to explain the change of kind integer,int a; // this is the exactly formInt a; // this is an untrue form.

Commonly emerged syntax errors are:

If we miss out on the parenthesis (}) while writing the code.Displaying the worth of a variable there is no its declaration.If we miss the semicolon (;) in ~ the end of the statement.

Let"s recognize through an example.


#include int main() a = 10; printf("The value of a is : %d", a); return 0;

Output

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In the above output, we observe that the password throws the error that "a" is undeclared. This error is nothing but the syntax error only.

There have the right to be one more possibility in i m sorry the syntax error deserve to exist, i.e., if us make mistake in the straightforward construct. Let"s understand this scenario with an example.


#include int main() int a=2; if(.) // syntax error printf("a is higher than 1"); return 0;

In the over code, we placed the (.) rather of problem in "if", so this generates the syntax error as presented in the below screenshot.

Output

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Run-time error

Sometimes the errors exist throughout the execution-time even after the successful compilation recognized as run-time errors. When the regime is running, and also it is no able to perform the operation is the main cause of the run-time error. The department by zero is the common example the the run-time error. This errors are very an overwhelming to find, as the compiler go not point to this errors.

Let"s understand through an example.


#include int main() int a=2; int b=2/0; printf("The value of b is : %d", b); return 0;

Output

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In the over output, us observe that the code shows the run-time error, i.e., division by zero.

Linker error

Linker errors room mainly created when the executable paper of the regime is no created. This deserve to be happened either because of the wrong function prototyping or consumption of the wrong header file. For example, the main.c document contains the sub() role whose declaration and an interpretation is excellent in some other document such as func.c. During the compilation, the compiler finds the sub() function in func.c file, so it generates two object files, i.e., main.o and func.o. At the execution time, if the an interpretation of sub() function is not uncovered in the func.o file, climate the linker error will be thrown. The most usual linker error the occurs is the we usage Main() instead of main().

Let"s understand through a an easy example.


#include int Main() int a=78; printf("The worth of a is : %d", a); return 0;

Output

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Logical error

The reasonable error is one error that leads to an undesired output. These errors create the untrue output, however they are error-free, known as logical errors. These species of failure are largely done through beginners. The event of this errors mainly depends upon the logical reasoning of the developer. If the programmers sound logically good, climate there will certainly be fewer opportunities of this errors.

Let"s recognize through one example.


#include int main(){ int sum=0; // change initialization int k=1; for(int i=1;i

Output

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In the above code, we are trying to publish the amount of 10 digits, yet we obtained the wrong calculation as we put the semicolon (;) ~ the for loop, so the inside statements the the because that loop will not execute. This produce the dorn output.

Semantic error

Semantic errors space the errors that occurred when the statements space not understandable by the compiler.

The complying with can it is in the cases for the semantic error:

Use of a un-initialized variable.int i;i=i+2;Type compatibilityint b = "doyourpartparks.org";Errors in expressionsint a, b, c;a+b = c;Array index the end of boundint a<10>;a<10> = 34;

Let"s recognize through an example.

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#include int main()int a,b,c;a=2;b=3;c=1;a+b=c; // semantic errorreturn 0;

In the over code, we usage the explain a+b =c, i beg your pardon is incorrect as we cannot use the 2 operands top top the left-side.