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C++ Programming Code Examples

C++ > If Else and Switch Case Code Examples

The if-else Ladder/else-if Clause

/* The if-else Ladder/else-if Clause The else-if is the most general way of writing a multi-way decision. */ if(expression1) statement; else if(expression2) statement; else if(expression3) statement; else if(expression4) { block of statement; } else statement; /* The expressions are evaluated in order; if an expressionis true, the "statement" or "block of statement" associated with it is executed, and this terminates the whole chain. As always, the code for each statement is either a single statement, or a group of them in braces. The last else part handles the "none of the above" or default case where none of the other conditions is satisfied. */

A relational operator is used to check the relationship between two operands. C++ Relational Operators are used to relate or compare given operands. Relational operations are like checking if two operands are equal or not equal, greater or lesser, etc. Relational Operators are also called Comparison Operators.

The if...else statement executes two different codes depending upon whether the test expression is true or false. Sometimes, a choice has to be made from more than 2 possibilities. The if...else ladder allows you to check between multiple test expressions and execute different statements. In C/C++ if-else-if ladder helps user decide from among multiple options. The C/C++ if statements are executed from the top down. As soon as one of the conditions controlling the if is true, the statement associated with that if is executed, and the rest of the C else-if ladder is bypassed. If none of the conditions is true, then the final else statement will be executed.

In computer programming, we use the if statement to run a block code only when a certain condition is met. An if statement can be followed by an optional else statement, which executes when the boolean expression is false. There are three forms of if...else statements in C++: • if statement, • if...else statement, • if...else if...else statement, The if statement evaluates the condition inside the parentheses ( ). If the condition evaluates to true, the code inside the body of if is executed. If the condition evaluates to false, the code inside the body of if is skipped.

The C++ comments are statements that are not executed by the compiler. The comments in C++ programming can be used to provide explanation of the code, variable, method or class. If we write comments on our code, it will be easier for us to understand the code in the future. Also, it will be easier for your fellow developers to understand the code. By the help of comments, you can hide the program code also. There are two types of comments in C++: • Single Line comment. • Multi Line comment

Allocating memory for "ODBC" Environment handle. Connecting to the data source "db97" using userid and password. Prepare the SQL statement by assigning it to the "statement"

In this, Insert item x into the 'priority queue', maintaining heap order. Return a pointer to the node containing the new item. Find the 'smallest' item in the priority queue. Return

The problem takes a bipartite graph as input and outputs colours of the each vertex after 'coloring the vertices'. The "Bipartite Graph" is a graph in which the set of vertices can be

Rows of "Pascal's Triangle" are conventionally enumerated starting with row n = 0 at the top ('0th row'). Entries in each row are numbered from the left beginning with k=0 & are usually