Switch Case Statement in C++ Programming Language
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The document discusses the switch case statement in C++. It provides the syntax for a switch case statement and explains that it allows executing different blocks of code based on the value of an expression. The document includes an example of a switch case statement that allows a user to input either their first, last, or middle name. It also provides an assignment to create a program that uses a switch case statement to allow a user to guess 3 secret numbers.
![#include<iostream.h>
using namespace std;
int main ()
{ char name[10]
int opt;
cout<<“Selection…”
<<“n[1] Firstname”
<<“n[2] Lastname”
<<“n[3] Middlename”
<<“nYour choice:”;
cin>>opt;](https://image.slidesharecdn.com/switchcasestatement-240318035822-41081a6f/85/Switch-Case-Statement-in-C-Programming-Language-6-320.jpg)
![Possible Output:
Selection...
[1] Firstname
[2] Lastname
[3] Middlename
Your choice: 2
Enter Lastname: Tigas
Hello Tigas
Please press any key to continue](https://image.slidesharecdn.com/switchcasestatement-240318035822-41081a6f/85/Switch-Case-Statement-in-C-Programming-Language-8-320.jpg)
Switch Case Statement in C++ Programming Language
- 1. Switch Case Statement Johnny Jean N. Tigas Zamboanga City High School
- 2. - A sequence of statements use to verify equivalent values for each alternative.
- 3. Syntax: switch (expression) { case constant_expression1: sequence_of_statements; break; case constant_expression2: sequence_of_statements; break; case constant_expression3: sequence_of_statements; break; … default: sequence_of_statements; }
- 4. In response to this statement: a. It takes in the value of the expression. b. Then it will compare to the value of constant_expression1,if it is satisfied, then the statements belonging to constant_expression1 will be executed. c. If constant expression1 is not satisfied, it will continue on comparing all the constant_expressions until one is satisfied. d. If none is satisfied, the statement(s) under default will be executed.
- 5. Sample Problem: A problem that lets you choose which data to input, that is ,either your first name, last name or middle name.
- 6. #include<iostream.h> using namespace std; int main () { char name[10] int opt; cout<<“Selection…” <<“n[1] Firstname” <<“n[2] Lastname” <<“n[3] Middlename” <<“nYour choice:”; cin>>opt;
- 7. switch(opt) { case 1: cout<<“nEnter Firstname:”; break; case 2: cout<<“nEnter Lastname:”; break; case 3: cout<<“nEnter Middlename:”; break; default: cout<<“nNone of the above.”; } cin>>name; cout<<“nnHello”<<name<<endl; return 0; }
- 8. Possible Output: Selection... [1] Firstname [2] Lastname [3] Middlename Your choice: 2 Enter Lastname: Tigas Hello Tigas Please press any key to continue
- 9. Assignment: Consider the problem with the secret number, if there are more than one secret number, you can use the switch to evaluate if the user have guessed one of the secret number. Assuming there are three (3) secret numbers, that is: 143,431 and 314;make a program to guess the 3 secret numbers.
- 10. THANKS!