Example of switch case statement, C/C++ Programming

Assignment Help:

#include
#include
#include

void* memorycopy (void *des, const void *src, size_t count)
{

  size_t n = (count + 7) / 8;
  char* destination = (char *) des;
  char* source = (char *) src;

  switch (count % 8)
  {
      case 0:  do{  *destination++ = *source++;
      case 7:  *destination++ = *source++;
      case 6:  *destination++ = *source++;
      case 5:  *destination++ = *source++;
      case 4:  *destination++ = *source++;
      case 3:  *destination++ = *source++;
      case 2:  *destination++ = *source++;
      case 1:  *destination++ = *source++;

    } while (--n > 0);
  }

  return des;
}

void tworegistervarswap (int *x, int *y)
{
  if (x != y)
  {
    *x = *x ^ *y;
    *y = *x ^ *y;
    *x = *x ^ *y;
  }
}

int bigintegeraverage (int x, int y)
{
  return (x & y) + ((x ^ y) >> 1);
}

int main (void)
{
  char *testArray = "This is a test.";
  char buffer[50];
  int x = 10;
  int y = 20;
  int m = 2000000000;
  int n = 1000000000;
 
  printf ("\nmemorycopy test before: %s", testArray);
  memorycopy (buffer, testArray, strlen(testArray) + 1);
  printf ("\nmemorycopy test after: %s", buffer);
  printf ("\n");

  printf ("\ntworegistervarswap test before: %d %d", x, y);
  tworegistervarswap (&x, &y);
  printf ("\ntworegistervarswap test after: %d %d", x, y);
  printf ("\n");

  printf ("\nbigintegeraverage regular code test: %d ", (m + n) / 2);
  printf ("\nbigintegeraverage function test: %d", bigintegeraverage (m, n) );
  printf ("\n");

  return 0;
}


Related Discussions:- Example of switch case statement

Discount program, Build a program that calculates a discount for items base...

Build a program that calculates a discount for items based on quantity bought each item is $99.99 Ask user to enter the quantity of the items Get the quantity of items from the u

Padovan string, example of padovan string program

example of padovan string program

Area under the curve, Write a program to find the area under the curve y = ...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Compute the average of five numbers, Step 1 Define the program headers and ...

Step 1 Define the program headers and the variables      #include   #include   #include   #include void main()   {       char prompt;     float a,b,c,d,e;     floa

What is the difference among a pointer and a reference?, A: A reference has...

A: A reference has to always refer to some object and, so, must always be initialized; pointers do not have such limits. A pointer may be reassigned to point to distinct objects wh

C program for sorting of character , #include stdio.h> #include conio.h>...

#include stdio.h> #include conio.h> #include string.h>   void main() {           char a[50],b[25][25],l[25],temp1;           int i=0,j=0,k=0,l1[25],c=0,c1=0,t=

Destruction of local object, Need assignment help What's the order that ...

Need assignment help What's the order that local objects are destructed?

Polindrome, A palindrome is a string that reads the same from both the ends...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Variables within c, Within software languages we have the ability to store ...

Within software languages we have the ability to store information in mail boxes i.e. memory slots which are given names to represent the box. The naming rules are governed by the

Password Validation Prgram in C++, Create a .cpp program that verifies the ...

Create a .cpp program that verifies the strength of a password that a user is entering is strong (complex/secure) enough. In the main area of the program, prompt the user to enter

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd