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

C, algo of stack using two queue

algo of stack using two queue

Wap in c to find determinant of matrix order 3x3 , Normal 0 fal...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Explain enumerated constants, Enumerated Constants Enumerated constants...

Enumerated Constants Enumerated constants enable the creation of new types and then explain variables of these types so that their values are restricted to a set of possible va

Which one would you prefer - a macro or a function, Which one would you pre...

Which one would you prefer - a macro or a function? Actually it depends on the purpose of program! - In case of macros, corresponding code is inserted directly into your sou

Sort war - Sorting algorithms, If quicksort is so quick, why bother with an...

If quicksort is so quick, why bother with anything else? If bubble sort is so bad, why even mention it? For that matter, why are there so many sorting algorithms? Your mission (sho

Program for stack over flow vulnerability., Imagine that the server program...

Imagine that the server program is a setuid program owned by the root, then after you penetrate the program with a shell running, you become the ROOT and you can remove the whole f

FILES, My file pointer is going to the location which i specified and writi...

My file pointer is going to the location which i specified and writing the value but it is in next line so,please help me iam developing in visual studio6

Pointers, Pointers are just numbers, representing addresses in memory. You ...

Pointers are just numbers, representing addresses in memory. You can add to and subtract from pointers, for instance. It is pretty easy to make mistakes with pointer math, however,

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