Tutorials on C, Java, and DSA

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This page explains differences between for and while loop. Both for and while loops are entry controlled loops but usually for is used when number of iteration are known in advance, whereas while is used when number of iterations are not known beforehand.

Java's if-else is a two-way control flow branching statement which can be used as an if-else-if ladder and can be nested one if statement inside another.

This article presents history of evolution of C programming. From history's point of view C was originally designed for and implemented on the UNIX operating system on the DEC PDP-ll, by Dennis Ritchie. C is a general-purpose programming language which features economy of expression, modern control flow and data structures, and a rich set of operators.

The major difference between break and exit statements in C is that break is a keyword that terminates the execution of current loop and switch block, while exit is a function that terminates the current program and returns the control to the operating system.

The major difference between actual and formal arguments or parameters is that actual arguments are the values used in call of the function, while formal arguments are variables named in the parenthesized list in a function definition. Formal arguments receive a copy of actual arguments when function is called.

The major difference between call by value and call by reference in C is that in call by value a copy of actual arguments/parameters is passed to respective formal arguments/parameters, while in call by reference the location (address) of actual arguments is passed to formal arguments, hence any change made to formal arguments will also reflect in actual arguments.

This page explains differences between break and continue statements in C programming language. The break is used in both switch and loop to terminate the execution, while continue is used to skip to the next iteration in a loop.

This page explains how to solve apache error - Forbidden You don't have permission to access / on this server.

To reverse the order of words in a string, first reverse the whole string and then reverse individual words of the reversed string. This page develops a C program for how to reverse the order of words in a string.

This page explains miscellaneous operators of Java like, ternary operator, member access, comma, array index, new, instanceof, and typecast.

This page explains basic and shorthand or compound assignment operators of Java. The assignment operator assigns the right-hand side value to the left-hand side operand. Assignment operator works on both primitive and reference types.