0
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
Conditional statement inside a conditional loop?
int i = 100;
while(i > 0) { // Conditional loop
--i;
if((i % 2) == 0) { // Conditional statement inside a conditional loop
System.out.println(i + " is even.");
}
}
Which element of the save as dialog box is used to save a file with a different file extension?
The 'Save As Type' drop down menu. For instance, in MS Word, it allows you to save a document as either rich text, simple text, .doc or .docx.
This is a homework assignment. write your homework assignments for you because you have been given them so that you learn the skills you will need in life.
However, if while doing this assignment you have specific things you need help to understand WikiAnswers will be happy to answer these specific questions for you.
Simple non-array variables are usually passed to methods by?
Simple non-array variables are usually passed to methods by value.
Arranging from smaller to larger.
From A to Z
From 1 to infinite numbers ..
What is Difference between if statement and select case statement in vb.net?
They are both conditional logic statements. The Select Case statement just happens to have a much more clean form when it comes to more than two cases.
Example of If..Then...Else:
If intVar = 123 Then
myStr = "123"
Else
myStr = "456"
End If
Example of Select Case:
Select Case intVar
Case 123
myStr = "123"
Case 456
myStr = "456"
Case Else
myStr = "789"
End Select
What is the implicit parameter?
An implicit parameter refers to a variable or value that is not explicitly passed to a function or method but is still accessible within its scope. This often occurs in object-oriented programming, where methods can access instance variables of the class without needing to pass them as arguments. Implicit parameters help streamline code but can also lead to reduced clarity regarding where values originate. They are commonly seen in programming languages that support closures or context-specific environments.
What is the difference in use of define and const variable?
1.type checking in const that is not a part of #define. 2.scope 3.debugging is possible with const.
const variable can be localized whereas #define variable cannot be done so.
#define simply replaces whatever you have defined by the text you want it to replace.
const variable's value cannot be manipulated during the course of the program.
#define is a text preprocessor command and like all text preprocessor commands (beginning with "#") are handled by textual substitution throughout the code before the compiler sees any of the code.
const is a compiler keyword that identifies a constant declaration. It is handled by the actual compiler.
What is the difference between the functions memmove and memcpy?
memmove handles the case where the source memory and destination memory overlap.
fo10
Its simple!dirve a menu based prog by using switch case & then apply every sorting function to it.
What is a programmable logic ASIC?
Programmable logic ASICs is a classification of ASICs are programmed by blowing fuses in a device to alter the logic function.
How do you evaluate an expression in hierarchy of operations?
Expressions are evaluated according to the language grammar. Operator precedence and associativity are derived from the grammar in order to aid our understanding, however the order of evaluation is independent of both because the C language standard does not specify operator precedence.
The general arithmetic rules of precedence hold for most expressions such that parenthesised operations take precedence over orders followed by multiplication/division operations and finally addition/subtraction operations (as per the PODMAS acronym).
Many of the more complex expressions we encounter can generally be evaluated according to the operator precedence table, which includes the associativity, such that operations with higher precedence are bound more tightly (as if with parenthesis) than those with lower precedence.
Difference between c and c plus plus?
Although the languages share common syntax they are very different in nature. C is a procedural language. When approaching a programming challenge the general method of solution is to break the task into successively smaller subtasks. This is known as top-down design. C++ is an object-oriented language. To solve a problem with C++ the first step is to design classes that are abstractions of physical objects. These classes contain both the state of the object, its members, and the capabilities of the object, its methods. After the classes are designed, a program is written that uses these classes to solve the task at hand.
++++++
C++ is a set of extensions to the C language to allow some (not all) principles of object-oriented programming to be used. Originally, C++ was a front end pre-processor for C and C++ compilers will translate C language functions.
When calling a function, passing a variable's address as function parameter.
You need to purchase the full version of the f-source product in order to get rid of the f-source button. The trial version does not allow the f-source button to be removed.
How do you get a function of a function?
A function is a mapping from one set of numbers (domain) to another (range). The mapping need not be linear: it can be any mathematical function. That is, for every number in the domain the function provides a rule which allows you to calculate another number.
If, then, you devise another function which is a mapping from the range of the first function to some other set, you have a function of a function.
For example, suppose the first function, f, is "add 1" and the second function, g, is "square the number."
Then the function
g of f = g[f(x)] = g[x+1] = [x+1]2 = x2 + 2x + 1
however, note that
f of g = f[g(x)] = f[x2] = x2 + 1
This illustrates that f of g is not the same as g of f.
Why is it possible to use the same variable names for actual and formal arguments in c language?
1. Because they are completely unrelated names.
2. Because there is no rule against them having the same names.
// Swap
// Demonstrates passing references to alter argument variables
#include
<iostream>
using
namespace std;
void
badSwap(int x, int y);
void
goodSwap(int& x, int& y);
int
main()
{
int myScore = 150;
int yourScore = 1000;
cout <<
"Original values\n";
cout <<
"myScore: " << myScore << "\n";
cout <<
"yourScore: " << yourScore << "\n\n";
cout <<
"Calling badSwap()\n";
badSwap(myScore, yourScore);
cout <<
"myScore: " << myScore << "\n";
cout <<
"yourScore: " << yourScore << "\n\n";
cout <<
"Calling goodSwap()\n";
goodSwap(myScore, yourScore);
cout <<
"myScore: " << myScore << "\n";
cout <<
"yourScore: " << yourScore << "\n";
return 0;
}
void
badSwap(int x, int y)
{
int temp = x;
x = y;
y = temp;
}
void
goodSwap(int& x, int& y)
{
int temp = x;
x = y;
y = temp;
}
Can an array be passed from a function to the calling portion of the program via a return statement?
It depends on the language, but in most cases yes, you can return arrays to callers via the return statement.
In C, arrays can be returned from a function by reference (that is, by pointer) but never by value (arrays cannot be copied automatically). The array must be allocated on the heap, never on the stack (you cannot return references to local variables). However, beware that returning arrays by reference is unsafe because there's no way to determine the upper bound of the array. This is why many C library functions return multiple values through output parameters and use the return value to indicate error conditions.
One way to return both the array and its size via a return statement is by returning a structure:
struct array_info {
void* array_ptr; /* pointer to first element in array */
int size; /* number of elements in the array */
};
Obviously you must cast the array_ptr member to the appropriate type before dereferencing any of the array elements.
In C++, C-style arrays work just as they do in C. However, the preferred method is to use a vector rather than a C-style array. A vector is a class template that encapsulates a C-style array with size and reserve, along with a rich set of useful functions (as with all templates, you don't pay for what you don't use). Vectors can be returned from functions both by value and by reference. Vectors also support move semantics making it possible to return vectors allocated on the stack as well as on the heap. C++ also supports an array class template. This is specifically for fixed-size arrays but is otherwise similar to a vector.
What is a repetitive measuring or checking program?
Many peole tend to measure the progress of their health and fitness program by how much weight they have lost. A better measurement of the success or failure of you program would be total body fat. This can be done very easily by the use of skin calipers.
How to check whether a character is numeric in an alphanumeric field in easytrieve.?
IF WS-AGE NUMERIC DISPLAY "NUMERIC" ELSE DISPLAY "NOT NUMERIC' END-IF
