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Chapter 4, Problem 1RQE

Describe the difference between the if /else if statement and a series of if statements.

Expert Solution & Answer
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Program Plan Intro

“if/else”if statement:

  • “if/else” ifis a conditional statement that controls the condition branching.
  • It executes the statements after evaluating the conditional expression.
  • The “if” statement evaluates the test expression and when it is evaluated as true, the statement inside the body of “if” statement is executed.
  • If the test expression is evaluated as false, it moves to the next if/else statement and the process continues till it reaches the finalif/else statement.
  • If the test expression is evaluated as false, the statements in the “else” is executed.

Syntax:

//if conditional statement

if(condition)

{

Statement1

}

//if condition statement2

else if(condition)

{

Statement2

}

//else part

else

{

Statement3

}

Series of “if” statement:

A condition statement that controls the condition branching. The “if” statement evaluates the test expression and when it is evaluatedas true, the statement inside the body of “if” statement gets executed.

Syntax:

// if conditional statement1

if(condition)

{

Statement1

}

// if conditional statement2

if(condition)

{

Statement2

}

Explanation of Solution

Difference between if/else if statement and a series of if statement:

if/else if statement if statement
The condition gets tested until one conditional block is found to be true. The conditions get validated for each of the condition cases given in a series.
The conditions are being evaluated to true to execute the statement. On evaluating true, the statement gets execute and exits the controls. Each series of condition needs to be evaluated for the execution of series of statement present. The control gets validated for each condition and based the valuation of condition; the control exits the condition.

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Chapter 4 Solutions

Starting Out with C++ from Control Structures to Objects, Student Value Edition plus MyProgrammingLab with Pearson eText -- Access Card Package (8th Edition)

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Use a switch...Ch. 4 - Describe the difference between the if /else if...Ch. 4 - In an if/else if statement, what is the purpose of...Ch. 4 - What is a flag and how does it work?Ch. 4 - Can an if statement test expressions other than...Ch. 4 - Briefly describe how the operator works.Ch. 4 - Briefly describe how the | | operator works.Ch. 4 - Why are the relational operators called...Ch. 4 - Why do most programmers indent the conditionally...Ch. 4 - An expression using the greater-than, less-than,...Ch. 4 - A relational expression is either ______ or...Ch. 4 - Prob. 11RQECh. 4 - The if statement regards an expression with the...Ch. 4 - The if statement regards an expression with a...Ch. 4 - For an if statement to conditionally execute a...Ch. 4 - In an if/else statement, the if part executes its...Ch. 4 - The trailing else in an if/else if statement has a...Ch. 4 - The if/else if statement is actually a form of the...Ch. 4 - If the subexpression on the left of the _________...Ch. 4 - If the subexpression on the left of the __________...Ch. 4 - The ________ logical operator has higher...Ch. 4 - The logical operators have _________...Ch. 4 - The _________ logical operator works best when...Ch. 4 - The __________ logical operator works best when...Ch. 4 - A variable with _________ scope is only visible...Ch. 4 - Prob. 25RQECh. 4 - An expression using the conditional operator is...Ch. 4 - The expression that is tested by a switch...Ch. 4 - Prob. 28RQECh. 4 - A program will fall through a case section if it...Ch. 4 - What value will be stored in the variable t after...Ch. 4 - Write an if statement that assigns 100 to x when y...Ch. 4 - Write an if/else statement that assigns 0 to x...Ch. 4 - Using the following chart, write an if/else if...Ch. 4 - Write an if statement that sets the variable hours...Ch. 4 - Write nested if statements that perform the...Ch. 4 - Write an if statement that prints the message The...Ch. 4 - Write an if statement that prints the message The...Ch. 4 - Write an if statement that prints the message The...Ch. 4 - Assume str1 and str2 are string objects that have...Ch. 4 - Convert the following if/else if statement into a...Ch. 4 - Match the conditional expression with the if /else...Ch. 4 - T F The = operator and the == operator perform the...Ch. 4 - Prob. 43RQECh. 4 - T F A conditionally executed statement should be...Ch. 4 - T F All lines in a block should be indented one...Ch. 4 - T F Its safe to assume that all uninitialized...Ch. 4 - T F When an if statement is nested in the if part...Ch. 4 - T F When an if statement is nested in the el se...Ch. 4 - T F The scope of a variable is limited to the...Ch. 4 - T F You can use the relational operators to...Ch. 4 - T F x ! = y is the same as (x y || x y)Ch. 4 - T F y x is the same as x = yCh. 4 - T F x = y is the same as (x y x = y)Ch. 4 - T F x == 5 || y 3Ch. 4 - T F 7 = x z 4Ch. 4 - T F 2 != y z != 4Ch. 4 - T F x = 0 || x = yCh. 4 - Each of the following programs has errors. 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