What Does Null Mean in C, C and C#

What Does Null Mean in C, C and C# In computer programming, null is both a value and a pointer. Null is a built-in constant that has a value of zero. It is the same as the character 0 used to terminate strings in C. Null can also be the value of a pointer, which is the same as zero unless the CPU supports a special bit pattern for a null pointer. What Is a Null Value? In a database, zero is a value. The value null means that no value exists. When used as a value, null is not a memory location. Only pointers hold memory locations.  Without a null character, a string would not correctly terminate, which would cause problems. What Is a Null Pointer? The C and C programming, a pointer is a variable that holds a memory location. The null pointer is a pointer that intentionally points to nothing. If you dont have an address to assign to a pointer, you can use null. The null value avoids memory leaks and crashes in applications that contain pointers. An example of a null pointer in C is: #include int main() {   Ã‚  int  *ptr NULL;   Ã‚  printf(The value of ptr is %u,ptr);   Ã‚  return 0; } Note: In C, the null macro may have the type void* but this is not allowed in C. Null in C# In C#, null means no object. Information about null and its usages in C# include: You cannot use 0 instead of null in your programs even though null is represented by the value 0.You can use null with any reference type including arrays, strings, and custom types.In C#, null is not the same as the constant zero.

Gun control Essay Example | Topics and Well Written Essays - 3250 words

Gun control - Essay Example 1). It is the responsibility of the governments to reduce firearms violence by developing gun control programs that make it more difficult for people to acquire and use guns. Federal, state, and local governments and law enforcement agencies need to better understand the gun violence problem so their limited resources can be effectively employed. This paper argue that gun control policies can significantly influence the number of deaths and injuries from firearms Gun Control Gun control is the government enacting some type of legislation to restrict availability of firearms or ammunition. The majority of governments that have implemented gun control legislation have focused on firearms ownership restrictions and background checks in attempt to reduce firearms violence. The common objective is to reduce a criminal's access to firearms in the hope that violent crime will be reduced. Currently, large urban areas of the United States are attempting to deal with a host of issues related t o firearms violence. Governments have used different types of laws and enforcement techniques in an attempt to eliminate or reduce firearms violence. The large numbers of homicides that occur in these areas have resulted in public pressure to effectively deal with the problem. Jurisdictions have attempted to lower the amount of firearms violence by enacting a number of laws on a whole range of issues related to firearms. ... 63-79) studied gun availability's effect on violent crime and found that a reduction in gun availability reduced the homicide rate and there was some change in the robbery rate. Why Gun Control in Necessary? Firearm injuries and deaths have reached an epidemic level in the United States. No other industrialized country in the world has comparable rates of mortality, morbidity, or financial costs incurred from firearm ownership and use (Fingerhut and Klein, 3290-3295). Firearm injuries are the second leading cause of injury death in the United States, and since 1972 have killed on average more than 30,000 people each year (Marwick, 1). More than 80 Americans die every single day as a result of firearms (Egendorf 74). While trends for the leading cause of injury death, motor vehicles, have been declining, deaths from firearms have increased. In some regions of the country, firearm deaths far exceed motor vehicle fatalities (Hoyert, Kochanek, Murphy 1). A study by Cohen & Steiner (p. 1- 8) ranked firearms as the 11th leading cause of death in the United States. Unlike motor vehicles, firearms are much less regulated. Firearms are not subject to any manufacturing standards or government oversight. For example, in many states, the purchase of guns does not require any licensing, education on how to use them, regulations for storage, or limitations on design or manufacturing (Egendorf 74). In 1998, five out of six handguns made in United States lacked basic magazine safeties to prevent the firearm from firing when the clip is removed or load indicators that would indicate when a bullet is in the gun (Vernick et al., 427-440). Gun manufacturers are producing more and more guns. About 4.5 million new firearms, including two million handguns are sold each year in the

The Talk Show in Relation to the Free and Democratic Debate Dissertation

The Talk Show in Relation to the Free and Democratic Debate - Dissertation Example Mirzoeff (2002) posits that the evolution of the talk show is a prime example of re-narrativizing everyday experiences through a participatory format spearheaded by Phil Donahue, paving the way for Oprah, Sally Jesse Raphael, and Jerry Springer. Additionally, Mirzoeff highlights the point that the key factor to the popularity in the talk show programs is the use of guests that â€Å"tend to be both ordinary in their resemblance to other middle-class Americans and exceptional in that their function is to narrate some form of transgressive or unconventional behavior† (p..453). However, on the other side of the spectrum, the popularity of the talk show format has fuelled polarised academic debate as to whether television talk shows are a valid new public sphere on a par with pre-existing political institutions as a form of public debate, particularly for marginalized social groups (Mirzoeff, 2002, p.453). Alternatively, critics of the televisual format argue that the confessional aspect of the talk show undermines the validity of the talk show as a genuine public sphere for debate and propose that the talk show is essentially a manipulated format of television, creating the illusion of participation with the overall purpose to entertain and thereby controlled by the programming objectives. For example, in the US the term â€Å"talk show† includes chat shows that feature groups of guests as well as the confessional Jerry Springer format. With regard to the latter participation format, this will involve guest participation and the host will typically undertake the role of mediator, which is an important distinction to make in considering how the talk show operates as a media experience (Tolson, 2001, p.7). To this end, Tolson asserts that â€Å"if the talk show is the most controversial TV genre then much academic commentary seems impelled to line up either for or against the terms of the controversy (2001, p.7).

Mental Health and Behavioural Problems Essay Example | Topics and Well Written Essays - 750 words

Mental Health and Behavioural Problems - Essay Example 1430). Studies show that children said to be hyperactive at three years of age had cognitive problems, this usually is observed to extend into adolescence, and such children  bear  traits like being antisocial (Moffit and Harrington 34). Randal explains that among the health problems that affect children later in childhood include anxiety disorders, mood disorders, conduct disorders, attention deficit, hyperactive disorders and substance dependence disorders (128). These behavioural problems  are explained  well by  use  of conceptual models. These models aim to provide an  explanation  for the supposed behavioural problem, and it also tries to  create  a  probable  solution to the problem. The main conceptual models include biological, psycho dynamic, behavioural, cognitive, sociological, and ecological. In the grid provided below, we will look at each model, probable explanation on how it causes a particular problem and its  method  of addressing the pro blem in question.  We shall consider gambling as the main  problem  and analyze the table below. ... This emphasises on the importance of winning in reinforcing the problem in question. This also basis its explanation on the fact that behaviour is acquired. Treatment of behavioural disorders of this origin is focused on empowerment. It focuses on solving of the issue and not on its cause. Its aim may include harm reduction, self control, or avoidance. Psychodynamic Disorder arises due to the urge to satisfy ones arousal needs. For instance, not winning may act as the reinforce of behaviour such as gambling Focus is mainly in empowerment. Cognitive Cognition focuses on the ability of an individual to interpret and conclude about events that are happening in his or her environment. Cognitive therapy is suggested as the mode of treatment, coping skills are an imparted on an individual. Patient is taught change and relapse prevention. Behavioural This is based on the fact that behaviours are learned. It says that inappropriate behaviours are as a result of inappropriate learning, and vi ce versa. Treatment achieved by imparting on an individual the various consequences of their behaviour. For those consequences that strengthen behaviour are reinforced, while those that weaken are reduced. Ecological This model takes an individual as a member of a variety of social groups. For children, the groups include school, peers and family. In this model, an individual’s performance is dependent on the nature and type of interaction he has with environment Problems arising from this are solved by identifying classroom, family, peer or group, and community environmental factors that enhance the occurrence of pleasant behaviours. Models Used in Assisting Students with Behavioural Problems The behavioural model is among the most  direct  and simplest  approach  to

Critical Evaluation of KFC Essay Example | Topics and Well Written Essays - 1750 words

Critical Evaluation of KFC - Essay Example This paper intends to evaluate the international trade theories implemented by KFC along with its Foreign Direct Investment (FDI) strategies in order to expand its business activities in the international market. Furthermore, it measures the risks associated with the performances and strategies of KFC in its business environment. In addition, the paper will focus on assessing the 4 P’s of marketing mix strategies undertaken by KFC in order to survive in the marketplace for long-term period. International Trade Theories The exchange of goods, services and capital across international boarder and/or territories is widely referred as international trade in the modern business environment. ... A culture can be treated as one of the strongest influencing factors in terms of conducting international trade between two different countries (Hodgetts & et. al., 2005). For instance, KFC is engaged with many countries including China, Mexico, Latin America, and US among others in terms of trade. These countries are different from each other to a large extent with regards to language barrier, ethnicity, religion and organizational culture among others. In addition, it also implemented the strategies focusing on merger and acquisition with three different companies operating in different market segments as well as in different regional sectors. This kind of extensive difference within the organisational culture in turn tends to increase the perplexities amid the interdependent relationship of various industrial participants. Therefore, with an intention to conduct a business in international market, KFC must take significant remedial measures such as downsizing and laying-offs in or der to deal with these difficulties regarding cultural aspects. (b) Political Factors Political factor includes the aspects such as tax policies, labour laws, tariffs and trade restrictions among others through which the government of a country interfere in the international trade procedures. In relation to these factors, organisations are quite likely to face the challenges in terms of grouping or managing the widely diversified workforce encouraging the sharing of common values and principles (Hodgetts & et. al., 2005). Hence, KFC can be observed to often undergo the threat related to the political aspects of a country when diversifying its strategic procedures in the international market. However, KFC was beneficial in conducting its business in

Data Security and Responsibility of the User Essay

Data Security and Responsibility of the User - Essay Example Hence, the human resources department are tasked to track all head hunting and social engineering activities to steal the personal information about the game designers and developers by the competition. In this context, the gaming companies implement stringent Information security policies similar to the ones defined for any software engineering company. Dayarathna (2009) presented five types of unauthorized activities that can be carried out in an organization that is immensely dependent upon computer systems and because all their intellectual properties and data resides on computer systems. These activities are - access, use, destructions, alterations and disclosure. The protection of information against these unauthorized activities are carried out in three attributes requiring different controls - Confidentiality, Integrity and Availability. In my major, all the information assets including personal records are identified and their requirements pertaining to Confidentiality, Inte grity and Availability are assessed. Thereafter, the threats from unauthorized activities are assessed and the internal vulnerabilities are detected such that the risk exposures can be determined. The asset based risk assessment methodology recommended by NIST is one of the most suitable risk analysis methods applicable in computer systems industries like the gaming industry (Stoneburner and Goguen et al. 2002). The controls are applied as an integral part of the risk mitigation strategies once all the threats and corresponding risks to assets are assessed and documented. Identity management controls to protect personal records form an integral part of such controls. The records comprises of personal attributes, academic records and professional records of employees. Claub and Kohntopp (2001) argued that identity management requires multilaterally secured communication within an organization. Such a system requires that security concerns of all parties in a communication are protect ed and hence valid pseudonyms related to all parties need to be shared. If one of the parties is not able to share valid pseudonyms then the party is viewed to be an unauthorized participant in the communication channel. The companies having computer generated intellectual properties are very strict about such pseudonyms that are digitally coded in various access tools provided to valid employees. Moreover, all communication channels are secured using various controls like e-mails & attachment scrutiny (both in inbound as well as outbound), private e-mail sites blocked by a firewall, intrusion prevention systems deployed at the Internet gateways, telephone conversations are routed through trained operators smart enough to detect social engineering/head-hunting attempts, etc (Phua. 2009). Such mechanisms can help in protecting theft of pseudonyms related to all employees such that their identity can be protected. Companies dependent upon computer generated intellectual property are h ighly concerned about protection of personnel information that

Paper Proposal Assignment Example | Topics and Well Written Essays - 250 words

Paper Proposal - Assignment Example The challenges begin right after birth, when members of the society expect the parents of the newly born baby to communicate the gender of the baby (Poisson 365). The society places a lot of undue attention, towards the gender of individuals, right from childhood. Two research questions are used in the study. First, do genderless individuals have adequate recognition in the society? Second, do genderless individuals possess capabilities and competencies needed for societal development? The two questions discuss the needs of genderless individuals in the society (Steensma et al 291). The primary data sources utilized in the research involves interviews and questionnaires. Parents will be given interview questions, to mainly determine if gender recognition plays a significant role in the development of their children (Hiffman & Hurst 205). Secondary sources will also be applied in the research to collect information. Textbooks, journal and magazines will be analyzed for information related to the areas of; gender differences, genderless individuals, role of gender in development, and scientific perspective towards gender differences and roles (Steensma et al