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C Programming
Questions related to the C Computer Programming Language. This ranges all the way from K&R to the most recent ANSI incarnations. C has become one of the most popular languages today, and has been used to write all sorts of things for nearly all of the modern operating systems and applications. It it a good compromise between speed, power, and complexity.
9,649 Questions
Explain the function of each part of the double housing planner?
PLANER MACHINE
Introduction: The planer is a machine tool designed to produce plane and flat surface on a workpiece which is too large or too heavy. The workpiece is securely fixed on a table called platen, and it reciprocates horizontally against a single edged cutting tool. The surface machined may be horizontal, vertical or at an angle.
Operations of planer machine: The planer is used for:
1. Planing flat horizontal, vertical and curved surfaces.
2. Planing at an angle and machining dovetails.
3. Planing slots and grooves.
The planer are available in different types for doing different types and sizes of job; the most common being the standard and double housing planer.
Construction: The main parts of the double Housing Planer machine is Bed and table, Housings, Cross rail, , Tool heads, Driving and feed mechanism.
Bed and table: The bed is a long heavy base and table made of cast iron. Its top surface is flat and machined accurately. The flat top surface has slots in which the workpiece can be securely clamped. The workpiece needs rigid fixing so that it does not shift out of its position. The standard clamping devices used on planer machine are: Heavy duty vice, T-holders and clamps, angle plate, planer jack, step blocks and stop. The table movement may be actuated by a variable speed drive through a rack and pinion arrangement, or a hydraulic system.
Housings: The housings are the rigid and upright column like castings. These are located near the centre on each side of the base.
Cross rail: The cross rail is a horizontal member supported on the machined ways of the upright columns. Guide ways are provided on vertical face of each column and that enables up and vertical movement of the cross rail. The vertical movement of the cross rail allows to accommodate workpiece of different heights. Since the cross rail is supported at both the ends, this type of planer machine is rigid in construction.
Tool heads: Generally two tool heads are mounted in the horizontal cross rail and one on each of the vertical housing. Tool heads may be swiveled so that angular cuts can be made.
Driving and feed mechanism: The tool heads may be fed either by hand or by power in crosswise or vertical direction. The motor drive is usually at one side of the planer near the centre and drive mechanism is located under the table.
The size of the planer is specified by the maximum length of the stroke, and also by the size of the largest rectangular solid that can be machined on it.
What is the value of d power in watts of a step function?
The unit step function is also known as the Dirac delta function.
It can be thought of as a function of the real line (x-axis) which is zero everywhere except at the origin (x=0) where the function is infinite in such a way that it's total integral is 1 - hence the use of the word 'unit'.
The function is not a strict function by definition in that any function with the properties as stated (0 everywhere except the origin which by definition has a limit tending to 0), must therefore also have an integral of 0.
The answer is therefore zero everywhere except at the origin where it is infinite.
Recursive program for a power b in c language?
int pow (int a, int b)
{
if (b==0) return 1;
else return a*pow(a,b-1);
}
Simply because, GUIs can be of any level of complexity. Elements such as buttons, links, etc all need to properly reference to different objects. If you click here, go there, if you click down there, go here, etc. It is like a very big, complex web. You can imagine that procedural code would make it very difficult to do anything that can grant the user the ability to press whatever they want whenever they want. That's why object oriented code is much more preferable.
What is lex in system software and assembly language programming subject in M.C.A?
M.C.A could be almost anything, maybe a name of a school or school department?
Lex (short for Lexical Analyzer)`is a specialized programming language that takes a set of specifications for how to scan text and find specific items in the text and generates C language source code that is compiled with other code to actually perform the work. The code generated can be used as part of a compilers lexical scan, scanning for specific words and symbols.
Is Variable declaration in event handlers begin with keyboard declar?
No. There is no such keyword as declar in Java.
What is dos interrupt and bios interrupt?
There are more than one of them, the most important DOS interrupt is 21H. Consult the related link.
To find the second highest number from a set of numbers?
Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.
Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.
Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.
Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.
C program to find largest digit in a number?
#include
#include
void main()
{
int a,b;
clrscr();
printf("Enter 2 numbers:");
scanf("%d %d",&a,&b);
if(a>b)
printf("%d is greater than %d",a,b);
else
printf("%d is greater than %d",b,a);
getch();
}
Programmers must be careful not to make syntax errors when writing pseudocode programs?
By their very nature, pseudo code programs are not compilable and do not conform to the exact syntax of the computer language used. Since they are not compiled there is no issue with syntax errors.
When translating from pseudo code to the target computer language is when one must be careful of the syntax, but not when writing pseudo code.
Programming language suitable for commercial applications is?
Any computer language may be suitable for commercial applications if the language is a good fit for the problem it is to solve.
Ultimately, however, it doesn't matter to the end user because they usually don't see or care what the actual programming language was.
Swap two numbers using call by value and call by reference?
You cannot swap two numbers using call by value, because the called function does not have access to the original copy of the numbers.
Swap with call by reference... This routine uses exclusive or swap without temporary variable.
void swap (int *a, int *b) {
*a ^= *b;
*b ^= *a;
*a ^= *b;
return;
}
What is the difference between a compiler and an interpreter.explain with examples?
The primary difference between them goes like this:
- A compiler takes the program code you've written and processes it into native machine code. Once this process is completed, you end up with a compiled object that can be further processed into a complete executable program. This compiled program is separate from the source code you still possess: completely in machine-native code. Since it's been hard-set with the instructions it has to do, compiled programs are fast, but they can't be changed without recompiling them.
- An interpreter takes the program code you've written and walks through it, step by step, handling each instruction on the fly: as it goes. The interpreter does all the machine-related stuff. It must keep reading the source code throughout the procedure since it does not produce a machine-native program from the source. Interpreted programs are easy to edit and adjust since there are no intervening steps between code writing and execution, but the very nature of instruction interpretation and having to deal with syntactical nuances every time the program is run tends to slow down the execution.
Perhaps the best real-world way to relate the difference is to picture yourself holding two different sets of instructions. One set is instructions on how to do a task. In this case, you're interpreting the instructions and doing the job yourself. The other set is instructions on how to build (compile) a machine to do the same task. Now you're compiling the instructions into a separate final object (the machine) that can now do the same job on its own. The pros and cons are evident here as well. As an interpreter, it's easy enough for you to alter the instructions so as to do something else. But once the machine is compiled, its function can't be changed. You'll need to alter the instructions and build a new machine.
Source code of text editor with compiler?
Check out open source sites, such as FreshMeat or SourceForge, or the GNU project.
What is difference between the arrow and the dot operator in c structures?
The arrow is used when a pointer variable is used to get at a member of a structure, and the dot operator is used when dealing with the real structure.
ptr->fld == (*ptr).fld
str.fld == (&str)->fld
What is a fast-transpose algorithm for sparse matrices?
A fast-transpose is a computer algorithm that quickly transposes a sparse matrix using a relatively small amount of memory. Using arrays normally to record a sparse matrix uses up a lot of memory since many of the matrix's values are zero. In addition, using the normal transpose algorithm to transpose this matrix will take O(cols*elements) amount of time. The fast-transpose algorithm only uses a little memory to record the matrix and takes only O(cols+elements) amount of time, which is efficient considering the number of elements equals cols*rows.
How do you get out of dos mode?
You have to just write there exit keyword.And if you have maxize screen of dos then u have to press alt+enter. Pooja
What is binomial array in antenna?
Binomial array is an array in which the amplitudes of the antenna elements in the array are arranged according to the coefficients of the binomial series...
The need for a binomial array is
i) In uniform linear array as the array length is increased to increase the directivity, the secondary lobes also occurs.
ii) For certain applications, it is highly desirable that secondary lobes should be eliminated completely or reduced to minimum desirable level compared to main lobes.
Suman Kalyan...
What is an example of Descending Order?
10
9
8
7
6
5
4
3
2
1
zebra
Yankee
xray
whiskey
Victor
Utah
tango
Romeo
Swap the value of two variables using call by reference?
swap (int *a, int *b) {
*a ^= *b;
*b ^= *a;
*a ^= *b;
}
int c = 13;
int d = 27;
swap (&c, &d); /*c is now 27 and d is now 13 */
Note: there is no call-by-reference in C. In C++:
void swap (int &a, int &b)
{
. int tmp;
. tmp = a;
. a = b;
. b = tmp;
}
Char force is a term Marine Security Guards use for the cleaning people that need to be escorted in classified workspaces in embassies.
== ==
// Returns number of 7s in num.
int numSevens(int num) {
int _num = num;
int numSevens = 0;
while( _num > 0 ) {
if( (_num % 10) == 7 ) {
++numSevens;
}
_num /= 10;
}
return numSevens;
}
How do you convert polynomials into binary form?
All you have to do is think of each x in the polynomial as a power of 10.
Therefore x is actually 10
x^2 = 100
x^3 = 1000
and so on....
So here is an example.
Polynomial given: x^8 + x^6 + x^3 + x + 1
In binary form it would be - 101001011
So for each x^(of whatever) if it exists then put a one in that location if not it is zero. At least this is the easy way I think about doing it.
