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Formula to Convert CMYK to RGB values

Tuesday, September 11th, 2012 at 4:21 pm

It is possible to convert CMYK values to RGB values. We can see how to do this in the following section.

Consider the cyan, magento, yellow and black values of CMYK as c, m, y and k respectively. Now we can find the equivalent RGB values using the following formulas :

r = (1-k)-(1-k)*c;

g = (1-k)-(1-k)*m;

b = (1-k)-(1-k)*y;

Here, r, g and b will have the corresponding red, green and blue values.

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Way to Find Maximun Digit in C#

Thursday, June 28th, 2012 at 6:07 pm

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int max_value = std::max({a, b, c});

It makes use of an overload of std::max which takes std::initializer_list<T>

It also means that we can pass more than three argument.

int max_value = std::max({1,2,3,4,5,6,98,10});

How to split the characters in the string with out any delimiter.

Monday, May 28th, 2012 at 5:49 pm

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If you want to split the characters in a string with out using any delimiter, you can use a character array for that.

eg :- String data = “WORLD”;

suppose data is the string we want to split.

Now declare a char array.

char[] cArray = new char[10];

cArray = data.ToCharArray();

char[] cArray = new char[10];

cArray = data.ToCharArray();

ToCharArray() function converts string to char array by separating each character.

Adding elements to a List in C#

Saturday, May 5th, 2012 at 5:38 pm

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This is achieved using Add command.

Eg:

List&lt;int&gt; listname = new List&lt;int&gt;();
listname .Add(9);
listname .Add(12);
listname .Add(11);  // 9,12,11 are the elements added to  list name

List<int> listname = new List<int>();

listname .Add(9);

listname .Add(12);

listname .Add(11); // 9,12,11 are the elements added to list name

We can mention list in other datatypes such as string etc. by mentioning that datatype instead of int type.

String to Byte Array Conversion in C#

Saturday, May 5th, 2012 at 5:32 pm

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// C# to convert a string to a byte array.
 public static byte[] StrToByteArray(string str)
 { 
System.Text.UTF8Encoding encoding=new System.Text.UTF8Encoding();
 return encoding.GetBytes(str); 
}

// C# to convert a byte array to a string.
 byte [] dBytes = ... 
string str;
 System.Text.UTF8Encoding enc = new System.Text.UTF8Encoding();
 str = enc.GetString(dBytes);

// C# to convert a string to a byte array.

public static byte[] StrToByteArray(string str)

{

System.Text.UTF8Encoding encoding=new System.Text.UTF8Encoding();

return encoding.GetBytes(str);

}

// C# to convert a byte array to a string.

byte [] dBytes = ...

string str;

System.Text.UTF8Encoding enc = new System.Text.UTF8Encoding();

str = enc.GetString(dBytes);

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Calculator in C

Friday, March 9th, 2012 at 5:06 pm

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The code given is a calculator in C. The scanf which scans the input as a number symbol just as in case of normal calculator.

#include&lt;stdio.h&gt;
float add(float,float);
float sub(float,float);
float product(float,float);
float divide(float,float);

void main()
{
float n1,n2;
char sym,choice;
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("This Program is a program for calculator\n\n");
scanf("%f%c%f",&amp;n1,&amp;sym,&amp;n2);
if(sym=='+')
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\n%f",add(n1,n2));
if(sym=='-')
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\n%f",sub(n1,n2));
if(sym=='*')
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\n%f",product(n1,n2));
if(sym=='/')
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("%f",divide(n1,n2));
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\nDo you wish to continue[y/n]");
scanf("%s",&amp;choice);
if(choice=='y'||choice=='Y')
main();
}

float add(float m1,float m2)
{
return(m1+m2);
}

float sub(float m1,float m2)
{
return(m1-m2);
}

float product(float m1,float m2)
{
return(m1*m2);
}

float divide(float m1,float m2)
{
return(m1/m2);
}

#include<stdio.h>

float add(float,float);

float sub(float,float);

float product(float,float);

float divide(float,float);

void main()

{

float n1,n2;

char sym,choice;

<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("This Program is a program for calculator\n\n");

scanf("%f%c%f",&n1,&sym,&n2);

if(sym=='+')

<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\n%f",add(n1,n2));

if(sym=='-')

<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\n%f",sub(n1,n2));

if(sym=='*')

<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\n%f",product(n1,n2));

if(sym=='/')

<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("%f",divide(n1,n2));

<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html">printf</a>("\nDo you wish to continue[y/n]");

scanf("%s",&choice);

if(choice=='y'||choice=='Y')

main();

}

float add(float m1,float m2)

{

return(m1+m2);

}

float sub(float m1,float m2)

{

return(m1-m2);

}

float product(float m1,float m2)

{

return(m1*m2);

}

float divide(float m1,float m2)

{

return(m1/m2);

}

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file manupulation in C

Thursday, March 1st, 2012 at 9:06 am

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io.input( [file] )

Example:
local tmp = io.input()    -- save current file handle
io.input( "newfile.txt" ) -- open new file in text mode
print( io.read() )        -- read and display the file
io.input():close()        -- close the file
io.input( tmp )           -- restore the previous file

io.input( [file] )

Example:

local tmp = io.input() -- save current file handle

io.input( "newfile.txt" ) -- open new file in text mode

print( io.read() ) -- read and display the file

io.input():close() -- close the file

io.input( tmp ) -- restore the previous file

Nano eBooks on iPhone and Android Apps

Saturday, March 19th, 2011 at 2:22 am

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Short, quick, precise and practical books – to help you get started on every topic.

http://schogini.com/shop/5-nano-ebooks

Swapping two numbers without using temporary variable

Saturday, October 9th, 2010 at 8:16 pm

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Here is the code for swaping two numbers without using temporary variable.

&#35;include&lt;stdio.h&gt;
&#35;include&lt;conio.h&gt;
void main()
{
int a,b;
printf("Enter the two numbers to swap");
scanf("%d%d",&a,&b);
a = a+b;
b = a-b;
a = a-b;
printf("After swapping the two numbers");
printf("a=%d",a);
printf("b=%d",b);
}

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b;

printf("Enter the two numbers to swap");

scanf("%d%d",&a,&b);

a = a+b;

b = a-b;

a = a-b;

printf("After swapping the two numbers");

printf("a=%d",a);

printf("b=%d",b);

}

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Multiplication w/o using * in C

Tuesday, October 5th, 2010 at 5:57 pm

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This is the simple program in c to perform multiplication without using multiply(*) symbol in c.

#include&lt;stdio.h&gt;
#include&lt;conio.h&gt;
void main()
{
int i,k=0,m,n;
clrscr();
printf("Enter the first and second number to multiply");
scanf("%d%d",&amp;m,&amp;n);
for(i=1;i&lt;=m;i++)
{
k = n + k;
}
printf("%d",k);
getch();
}

#include<stdio.h>

#include<conio.h>

void main()

{

int i,k=0,m,n;

clrscr();

printf("Enter the first and second number to multiply");

scanf("%d%d",&m,&n);

for(i=1;i<=m;i++)

{

k = n + k;

}

printf("%d",k);

getch();

}

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Swapping two numbers without using temporary variable

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