Programming - Marla Fuentes

What is a Switch Case?
0 Switch Case is a type of selection control mechanism that
exists in most imperative programming languages such
as Pascal, Ada, C/C++, C#, Java, and so on. It is also
included in several other types of languages. Its purpose is
to allow the value of a variable or expression to control
the flow of program execution via a multiway branch (or
"goto", one of several labels). The main reasons for using a
switch include improving clarity, by reducing otherwise
repetitive coding, and (if the heuristics permit) also
offering the potential for faster execution through
easier compiler optimization in many case.

Examples:
Example #1: break;
case 'D' :
#include <iostream> cout << "You passed" << endl;
using namespace std; break;
case 'F' :
int main () cout << "Better try again" << endl;
{ break;
// local variable declaration: default :
char grade = 'D'; cout << "Invalid grade" << endl;
}
switch(grade) cout << "Your grade is " << grade << endl;
{
case 'A' : System (“pause”);
cout << "Excellent!" << endl; return 0;
break; }
case 'B' :
case 'C' :
cout << "Well done" << endl;

Example #2: }

#include <iostream> cout << "Of course I had nothing to
using namespace std; do with the grade.";
cout << "nThe professor was really
int main () off the wall.n";
{
system ("pause");
char letGrad, ch; return 0;
cout << "Please enter a character: ";
cin >> letGrad; }
switch (letGrad)
{
case 'A': cout << "The numerical
grade is between 90 and 100"; break;
case 'B': cout << "The numerical
grade is between 80 and 89.9"; break;
case 'C': cout << "The numerical
grade is between 70 and 79.9"; break;
case 'D': cout << "How are you going
to explain this one?"; break;

Example #3: break;

#include <iostream> case 'F':
using namespace std; person = "female";
int main ( ) break;
{
string person ; case 'f':
char gender ; person ="female";
cout << "Please enter your gender !n"; break;
cin >> gender; default:
switch (gender) person = "unknown";
{ case 'm': }
person = "male" ; cout << person << endl;
break;
system ("pause");
case 'M': return 0;
person = "male"; }

Example #4: break;
default: cout << "Too large!n";
#include <iostream.h> break;
int main() }
{ cout << "nn";
unsigned short int number;
cout << "Enter a number between 1 and 5: "; system("pause");
cin >> number; return 0;
switch (number)
{ }
case 0: cout << "Too small, sorry!";

break;
case 5: cout << "Good job!n";
break;
case 4: cout << "Nice Pick!n";
break;
case 3: cout << "Excellent!n";
break;
case 2: cout << "Masterful!n";
break;
case 1: cout << "Incredible!n";

What are Loops?
0 Loops are used to repeat a block of code. Being able to
have your program repeatedly execute a block of code is
one of the most basic but useful tasks in programming --
many programs or websites that produce extremely
complex output (such as a message board) are really only
executing a single task many times. (They may be executing
a small number of tasks, but in principle, to produce a list
of messages only requires repeating the operation of
reading in some data and displaying it.) Now, think about
what this means: a loop lets you write a very simple
statement to produce a significantly greater result simply
by repetition.

Examples:
Example #1:
#include <iostream>

using namespace std;

int main()
{
int x;

x = 0;
do {

cout<<"Hello, world!n";
} while ( x != 0 );
cin.get();
}

Example #2:

#include<iostream>
#include<string>
int main()
{

using namespace std;
string password, happiness;
happiness="happiness";

cout<<"Enter the correct password..n"<<endl;
do{
cout<<"Enter the correct password to obtain surprise: ";
cin>> password;
}

while (password!=happiness);
cout<<"You've got it!"<<endl;

system("pause");
return (0);
}

Example #3: while ( time < 1 || time > 10) endl;
{ cout << "Must enter
#include <iostream> between 1 and 10 seconds, }
#include <cmath> please re-enter.n"; system ("pause");
using namespace std; time = return 0;
fallingdistance();
}
int fallingdistance(); int fallingdistance ()
}
{
int main() int seconds;
cout <<"nSeconds
{ falling distancen"; cin >> seconds;
int count = 1 ; cout <<"--------------------- return seconds;
int time; ------------------n"; }
double distance ;
cout << "Please for ( count = 1; count <=
entertime in 1 through 10 time; count++)
seconds.nn"; {
distance = .5 * 9.8 *
time = fallingdistance(); pow(time, 2.0);
cout << count << "
" << distance <<" meters"<<

Submitted to:

Mr. Edwin Globio
http://eglobiotraining.com

Thank you and God bless!
http://www.slideshare.net/mfuentessss

Programming - Marla Fuentes

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