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In this post, we will understand the difference between if-else statement and ‘switch’ statement.If-elseDepending on the expression inside the statement, output would be generated.It uses multiple statements for multiple choices.This statement tests for equality.It can be used to test logical expressions.It can evaluate integer, character, pointer, floating-point type and boolean type.Just one of the ‘if’ or ‘else’ statement gets executed.If the condition inside the ‘if’ statement is false, then the ‘else’ statement is executed if it has been created.It is tough to edit if-else statement, especially if it is nested.SwitchThe statement that needs to be executed is decided by the ... Read More
In this post, we will understand the difference between exit(0) and exit(1).exit(0)It is portable.It tells about the successful termination or completion of the program.It tells about the termination when the program is executed without any errors.The ‘EXIT_SUCCESS’ macro is used to return code 0.The ‘EXIT_SUCCESS’ can be defined as standard as zero.Syntaxexit(0);exit(1)It is not portable.It tells about the abnormal termination of the program.It tells about the termination if the program exited with certain error when the program was being executed.The ‘EXIT_FAILURE’ macro is used to return code 1.It is not restrict by standard to be 1 only.It can be used ... Read More
In this post, we will understand the difference between character array and string.StringsThey are immutable.Once they are defined, they can’t be changed.It refers to a sequence of characters, which is represented as a single data type.It contains built-in functions such as substring(), charAt().The ‘+’ operator can be used to append strings together, which would form a new string.The charAt() method helps access characters at a specific index within a ‘String’.These strings are stored in the ‘String Constant Pool’.It is not preferred to store passwords in strings in Java.A string can be converted to a character array using toCharArray() method of ... Read More
File is collection of records or is a place on hard disk, where data is stored permanently.Need of filesEntire data is lost when a program terminates.Storing in a file preserves the data even if, the program terminates.If you want to enter a large amount of data, normally it takes a lot of time to enter them all.We can easily access the content of files by using few commands.You can easily move your data from one computer to another without changes.By using C commands, we can access the files in different ways.Operations on filesThe operations on files in C programming language ... Read More
File is collection of records or is a place on hard disk, where data is stored permanently.Need of filesEntire data is lost when a program terminates.Storing in a file preserves the data even if, the program terminates.If you want to enter a large amount of data, normally it takes a lot of time to enter them all.We can easily access the content of files by using few commands.You can easily move your data from one computer to another without changes.By using C commands, we can access the files in different ways.Operations on filesThe operations on files in C programming language ... Read More
In this post, we will understand the difference between inline and macro in C++.InlineIt is a function in C++.It is parsed by the compiler.It can be defined inside or outside the class.It evaluates the argument only once.The compiler may not convert all functions to ‘inline’ function and expand them all.The short functions that are defined inside the class are automatically made as inline functions.An inline function inside a class can access the data members of the class.Inline function can be terminated using curly brackets.It is easy to debug.This is because error checking is done during compilation.It binds all statements in ... Read More
File is collection of records or is a place on hard disk, where data is stored permanently.Need of filesEntire data is lost when a program terminates.Storing in a file preserves the data even if, the program terminates.If you want to enter a large amount of data, normally it takes a lot of time to enter them all.We can easily access the content of files by using few commands.You can easily move your data from one computer to another without changes.By using C commands, we can access the files in different ways.Operations on filesThe operations on files in C programming language ... Read More
An array is a group of related data items that are stored with single name.For example, int student[30]; //student is an array name that holds 30 collection of data items with a single variable nameOperations of arraySearching − It is used to find whether particular element is present or notSorting − It helps in arranging the elements in an array either in ascending or descending order.Traversing − It processes every element in an array sequentially.Inserting − It helps in inserting the elements in an array.Deleting − It helps in deleting an element in an array.The logic to find even numbers ... Read More
In this post, we will understand the difference between checked and unchecked exceptions in Java.Checked ExceptionsThey occur at compile time.The compiler checks for a checked exception.These exceptions can be handled at the compilation time.It is a sub-class of the exception class.The JVM requires that the exception be caught and handled.Example of Checked exception- ‘File Not Found Exception’Unchecked ExceptionsThese exceptions occur at runtime.The compiler doesn’t check for these kinds of exceptions.These kinds of exceptions can’t be caught or handled during compilation time.This is because the exceptions are generated due to the mistakes in the program.These are not a part of the ... Read More
An array is a group of related data items that are stored with single name.For example, int student[30]; //student is an array name that holds 30 collection of data items with a single variable nameOperations of arraySearching − It is used to find whether particular element is present or notSorting − It helps in arranging the elements in an array either in ascending or descending order.Traversing − It processes every element in an array sequentially.Inserting − It helps in inserting the elements in an array.Deleting − It helps in deleting an element in an array.The logic applied to perform arithmetic ... Read More