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What else can I help you with?
What are void pointers?
They are pointers without type
How do you swap two strings in c plus plus?
The most efficient way to swap strings is to point at them, and swap the pointers. Swapping the actual strings is problematic if the strings are of unequal length but impossible when they are also statically allocated. Dynamic strings can always be physically swapped, however it's highly inefficient. If it really must be done, then use a built-in method such as string::swap(). Otherwise just use string pointers and swap the pointers, never the strings themselves. The following example shows how both techniques can be used on statically allocated strings. Example output is show below. #include <iostream> using namespace std; void SwapPointers(char ** pp1, char ** pp2 ) { cout<<"\nSwapping pointers:"<<endl; char * t = *pp1; *pp1 = *pp2; *pp2 = t; } void SwapStatics(char * String1, char * String2, size_t len) { cout<<"\nSwapping static strings:"<<endl; while(len--) String1[len]^=String2[len]^=String1[len]^=String2[len]; } int main() { char s1[] = "one "; char s2[] = "two "; char s3[] = "three "; // Note that the output statements before and after // swapping are exactly the same, proving the strings // have really swapped. cout<<"Original strings:"<<endl; cout<<s1<<s2<<s3<<endl; SwapStatics(s1,s2,sizeof(s1)); cout<<s1<<s2<<s3<<endl; cout<<endl; // We cannot swap s3 with either s1 or s2, because // s1 and s2 don't have the space to accomodate s3. // However, we can use pointers instead: char * p1 = s1; char * p2 = s2; char * p3 = s3; // Again, note that the output statements are the // same before and after swapping, proving the // pointers have swapped. cout<<"Original pointers:"<<endl; cout<<p1<<p2<<p3<<endl; SwapPointers(&p1,&p3); cout<<p1<<p2<<p3<<endl; cout<<endl; // Just to prove the strings didn't swap... cout<<"The strings have not swapped:"<<endl; cout<<s1<<s2<<s3<<endl; cout<<endl; return(0); } Output: Original strings: one two three Swapping static strings: two one three Original pointers: two one three Swapping pointers: three one two The strings have not swapped: two one three
How do you write a reverse function in C plus plus without pointers?
You can either use references or you can simply return the result by value. Note that in C++, unlike C, references are not the same as pointers. C++ references are aliases, alternate names for existing objects, whereas pointers are just variables that may contain a memory address that can be dereferenced.
Why laser mouse are used?
Because the laser pointers are much easier to use than the ball pointers. The ball pointers are often difficult to move around while the laser pointers can move in any direction without "getting stuck"
where can I find business grants without government strings attached?
where can I get a business grant without government strings attached?
What is pointer and where it is used?
A pointer is a variable used to store a memory address. That is, we can use a pointer variable to refer to another variable (including other pointers). Although many variables within a program have names and can be referred to directly by those names, the majority of variables are anonymous; they have no names we can refer to. For instance, every variable declared on the heap is anonymous, every element of an array is anonymous and every node in a list is anonymous. Without pointers there would be no way to refer to these anonymous variables. Moreover, there would be no way to allocate objects on the heap without pointers. Pointers also make it possible to pass addresses into functions. In C, for instance, all arguments to a function are passed by value, however a pointer's value is a memory address thus pointers allow us to use pass by reference semantics. This makes it possible for a function to refer to an object outwith the local scope of the function.
What are the c-programs for indexed fileallocation without pointers?
Home-works.
How can I play the guitar without touching other strings?
To play the guitar without touching other strings, you need to focus on your finger placement and technique. Use the tips of your fingers to press down on the strings you want to play while being careful not to touch the neighboring strings. Practice precision and control to improve your ability to play without touching other strings.
What is the most important part of the violin?
Well I think the strings are as you cannot play the violin without the strings. from the belt man. Also the sound post in the violin is a major player in the sound making process
What is a violin without strings?
A broken violin.
10 When reallocating memory if any other pointers point into the same piece of memory do you have to readjust these other pointers or do they get readjusted automatically?
As for pointers, I think you have to readjust them. Pointers are just variables that store a memory address in them. You can have as many pointers that point to a single location in memory as you want.
Who made the most 3 pointers in a basketball game without missing?
Michael Jordan
