C Programming

The pointer is non-NULL.

square root of the argument

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In short you cannot, unless you provide a suitable alternative to the standard library yourself (in other words, reinvent the wheel). At the very least you will need to include the common runtime definitions (crtdefs.h) just to create a bare-bones program that does absolutely nothing, but you'll need to implement all the standard IO functions yourself. Even third-party replacements make extensive use of the standard library, so you're completely on your own here. The standard library exists so that you can draw upon a rich set of primitive but highly optimised, tried and tested functions which act as building blocks upon which you can create your own programs.

90

Its really a matter of opinion. I prefer C++ to Java but that doesn't mean C++ is always better than Java. C++ can be rather hard to learn if you are new to it but it is a very rewarding language. On the other hand, Java is very portable and is used in just about all Android phones (I don't know enough to say whether or not all of them use java.) Anyway, if it is system development or game development you are going for, C++ is a great choice, providing low level access to the computer and providing fast speed if the code is written well. Java is a good portable language that is compiled to computer code using the Java Virtual Machine which compiles it to computer readable code and then runs which makes it portable. In the case of Java, mobile phone apps, web apps and games (most well known being Minecraft) are available to you. It all depends on what you want, hopefully with the information I have give you you can make and informed decision.

Why do you think it is a question? It is a homework assignment.

Writing a program to add 5 numbers follows the same design principles as any other program design:

In the first step, clarify the requirements. For example, you might want to raise the following questions:

Will the program always add exactly 5 numbers, or any number of numbers up to 5?

Will all N summands be known at the same time, or will the program be required to add one summand at the time, until all N summands are accumulated?

Will all N summands share the same data type, and if so, what is the shared data type?

How is the program expected to handle summands of different types and resolution?

How is the program expected to obtain its input (the number N, and the N summands), and how is the program expected to present its output (the sum)?

How is the program expected to respond to error conditions?

In the second step, design a solution and identify its limitations. For example, you might discover that the algorithm stops functioning once the sum reaches a certain value. You might want to specify the precision of the result, and limitations of the algorithm (for example, the fact that N must be five).

In the third step, you'd repeat steps 1 and 2 until you understand the requirements, and the person who plans to use your program is satisfied with its limitations.

In the fourth step, you'd draft an initial version of the program. This could be feature limited (for example, with limited error checking), but should demonstrate that the core algorithm works correctly. Since the program will need to interface with a human or other programs, this version should also demonstrate this interface, proving that the required inputs and outputs can be obtained and delivered as intended.

In the fifth step, you'd refine your program. This will typically include refined error checking and diagnostics, performance improvements, etc.

In the sixth step, the program is being tested, and errors are addressed. When necessary, this might require returning to step 1.

In the seventh step, you should always review the requirements and limitations again to ensure that these agreed facts remain true, and no further limitations were added or new requirements discovered.

Subject to the complexity of your program, other steps include the creation of documentation and training materials, legal research, patent filing, software installation and distribution, protection of your intellectual property, and some-such.

There is no data type that automatically increases each time a new record is entered. You are probably thinking of a linked list, but that is not a data type, it is a container and it must be manually programmed to ensure correct behaviour. However, C does not provide object-oriented encapsulation so correct behaviour cannot be guaranteed. In C++, all containers are implemented as encapsulated objects, thus correct behaviour can be assured and the container can shrink and grow automatically.

In layman's terms, compiler is an application to convert the code into instructions computer can understand. In a low level language, the code is already written using low level instruction which a computer can understand. Hence there is no need for a compiler.

A function f() will can be defined as returning a pointer to a character with the syntax

char *f()

{

}

One must be careful in creating these functions that the character pointer is set to point to a static variable or an allocated string; an automatic variable will vanish when the function exits, leaving the pointer invalid.

I should point out that this is very basic C syntax. If this question is being asked as part of a school assignment, I must suggest that perhaps you should drop this course now, as it will be immeasurably harder as you get further into it.

Greatly.

Certainly, a person with data structures orientation will write better structure code.

Imagine yourself is asked to write adding to big integers numbers having 200 digits?

Using long also we can not do this.

By employing linked list type data structure we can achieve this.

This is an example only.

Variables are names given to the data. Data types are the kinds of data which the computer interacts with. In C there are five basic data types :

1)char (basically anything in ' '. Normally a single character)

2)int (all integers like -5 , 10 , -3201 etc)

3)float (any decimal value)

4)double (Higher decimal value)

5)void (nothing)

Consider the following statement

int var = 1;

The above statement means that you are declaring a variable var which is of data type int and giving the variable a value of 1.

If the array does not have an initial size parameter, the array would be the size of the initialization vector, so you would not be able to store any data beyond the end of those elements without crashing your program or causing memory bugs. If there is a specified array size and the initialization vector is smaller than that size, then all remaining elements will be set to the value 0; it is not an error to not specify all elements in the initialization vector.

The C language does not provide any support for graphics as standard. C is designed to be as generic as possible, but graphics are a system-specific feature. To use graphics in C you need a third-party graphics library that supports your operating system and hardware, however generic libraries such as OpenGL are available. Nevertheless, it is not possible to draw curves, you can only approximate a curve using a series of short lines. The shorter the lines and the higher the resolution, the smoother the curve will appear.

Assuming you have access to an OpenGL library, you can draw an ellipse as follows:

void DrawEllipse(float cx, float cy, float rx, float ry, int num_segments)

{

const float pi = atan (1) * 4;

float theta = 2 * pi / float (num_segments);

float c = cosf (theta);

float s = sinf (theta);

float x = 1;

float y = 0;

float t;

glBegin (GL_LINE_LOOP);

for (int i = 0; i < num_segments; ++i)

{

glVertex2 f (x * rx + cx, y * ry + cy);

t = x;

x = c * x - s * y;

y = s * t + c * y;

}

glEnd();

}

A constant is a variable that is immutable. The storage representation is exactly the same as for any other variable of the same type, the only difference is that all constants are allocated in the program's data segment (static memory).

Different languages use different size types for different reasons. In this case, the difference is between ASCII and Unicode. Java characters use 2-bytes to store a Unicode character so as to allow a wider variety of characters in strings, whereas C, at least by default, only uses 1 byte to store a character.

TRAVERSE - This is a technical term, which means to turnover: it is applied to an issue taken upon an indictment for a misdemeanor, and means nothing more than turning over or putting off the trial to a following sessions or assize; it has, perhaps with more propriety, been applied to the denying or taking issue upon an indictment, without reference to the delay of trial.

if you wanted to have different order and transaction automatch criteria for different departments, what would you do?

It is meaningless. The term 'high-level language' implies a high-level of abstraction between the source code and the resultant machine code. In order for there to be a one-to-one relationship between the source code and the machine code, there must be little to no abstraction; the source language must be low-level. Assembly language is a low-level language with little to no abstraction.

You add 2 fractions with the same denominator [c], so the sum is the sum of the numerators divided by the denominator: a/c + b/c = (a+b)/c

A while statement is one type of looping statement.

by which we can start a loop in our programs.

while loop is precondition checking statement,

because it first check its condition then loop will go to its body part.

EX.

while(i>0)

{

//body part

}

here when i will >0 then it will check it body part and execute it and display

result.