Overview of control structures

According to the structure theorem, any computer program can be written by using the basic control structures as shown in figure below. They can be combined in any way but is necessary to deal with the given problem.

 

 

 

                                                       Figure: Control Structures


The selection structure tests the condition, and then executes one sequence of statements as an alternative of another, depending on whether the condition is true or false. The condition is any variable or expression that returns a Boolean value (TRUE or FALSE). The iteration structure executes a series of statements repetitively as long as a condition holds true. The sequence of structure simply executes a sequence of the statements in the order in which they occur.

Posted Date: 10/3/2012 5:39:50 AM | Location : United States

Ask an Expert

Related Discussions:- Overview of control structures-comparison operators, Assignment Help, Ask Question on Overview of control structures-comparison operators, Get Answer, Expert's Help, Overview of control structures-comparison operators Discussions

Write discussion on Overview of control structures-comparison operators
Your posts are moderated

Write your message here..

Related Questions

Transactions in sql, Transactions in SQL BEGIN TRANSACTION, COMMIT, an... Transactions in SQL BEGIN TRANSACTION, COMMIT, and ROLLBACK, SQL has the same syntax except for START in place of BEGIN. However, START TRANSACTION is used only for outermost

Conditionals - sql, Conditionals - SQL At first sight SQL does not app... Conditionals - SQL At first sight SQL does not appear to have a single operator for expressing logical implication. In this respect it would be in common with most programming

Appgen to sap data export, We are seeking a freelance consultant that is fa... We are seeking a freelance consultant that is familiar with Appgen applications. We require exporting all our data into a format appropriate for importing into SAP Business One. Pl

I need sql data base, I need SQL Data Base Project Description: Netwo... I need SQL Data Base Project Description: Network SQL database and SQL Setup two 4 workstation Skills required are Data Entry, MySQL, SQL

Dynamic ranges- iterative control, Dynamic Ranges The PL/SQL lets you det... Dynamic Ranges The PL/SQL lets you determine the loop range dynamically at run time, as the example below shows: SELECT COUNT(empno) INTO emp_count FROM emp; FOR i IN 1..emp_cou

Commit statement in pl sql, COMMIT Statement The COMMIT statement expli... COMMIT Statement The COMMIT statement explicitly makes everlasting changes to the database during the present transaction. The Changes made to the database are not considered e

Scope and visibility- pl/sql, Scope and Visibility The References to an ... Scope and Visibility The References to an identifier are resolved according to its visibility and scope. The scope of an identifier is that area of a program unit (subprogram, b

Restriction and and - sql, Restriction and AND - SQL Restriction is av... Restriction and AND - SQL Restriction is available via the WHERE operator, and so it is in SQL. However, by Example showing how a certain simple restriction can be expressed u

Variable declaration - sql, Variable Declaration - SQL SQL's support f... Variable Declaration - SQL SQL's support for variables is very similar to Tutorial D's, except that the syntax for creating persistent  variables-base tables-is quite differen

Authorisations - privileges, Authorisations - Privileges As relational... Authorisations - Privileges As relational theory is silent on the issue of authorisation, it offers nothing with which SQL's vast edifice in support of what it calls privilege