1. Estructura de Selección
COMP 232
Prof. Carlos Rodríguez Sánchez

2. Flujogramas If selection structure start Price = price * 1.1 F stop
Enter Part number & price T
Price = price * 1.1
Part number = “AB203” F
Display “Price increase”
Display part number & price
stop

3. Flujogramas start If/else selection structure A Enter sales T
Display commission T
Commission = .02 * sales
Sales > 1500
stop F
Commission = .01 * sales A

4. Codificando la Estructura de Selección
Formato:
if (condición) one statement or a block of statements enclosed in braces, to be processed when the condition is true
[else one statement or a block of statements enclosed in braces, to be processed when the condition is false]

5. if (condition)
one statement {
multiple statements
require braces }
else
multiple statements require braces

6. Operadores de comparación utilizados en C++
Operator
Operation
Precedence number
<
<=
>
>= == !=
less than
less than or equal to
greater than
greater than or equal to
equal to
not equal to 1 2

7. Ejemplos if statement’s condition Meaning if (quantity < 50)
if (age >= 25)
if (onhand == targed)
if (quantity != 7500)

8. Using Comparison Operators in a Program
start a
Enter first number & second number
Display first number & second number
Assign first number to temp T
first number > second number
Assign second number to first number
stop F
Assign temp to second number a