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PSU CMPSC 101 FINAL QUESTIONS & ANSWERS 100% CORRECT!!
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branching - ANSWERdirects a program to execute either one statement group or another, depending on an expression's value. Ex; print "Too young to drive" if userAge < 16, else print "OK to drive". What is the final value of numItems? bonusVal = 5; if (bonusVal<12) numItems= 100 numItem...

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  • February 26, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • psu cmpsc 101 final questions answers 100 corre
  • psu cmpsc 101 stuvia 2025
  • branching answerdirects a program to execute ei
  • what is the final value of numitems bonusval 5

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PSU CMPSC 101 FINAL QUESTIONS &
ANSWERS 100% CORRECT!!
branching - ANSWERdirects a program to execute either one statement group or
another, depending on an expression's value.
Ex; print "Too young to drive" if userAge < 16, else print "OK to drive".

What is the final value of numItems?
bonusVal = 5;
if (bonusVal<12) numItems= 100
numItems = 200; - ANSWER5 < 12 so the first branch executes, namely numItems =
100.

If userAge is greater than 62, assign 15 to discount. Else, assign 0 to discount. -
ANSWERif (userAge > 62) {
discount = 15;
}
else {
discount = 0;
}

If numPeople is greater than 10, execute groupSize = 2 * groupSize. Otherwise,
execute groupSize = 3 * groupSize and also numPeople = numPeople - 1. -
ANSWERif (numPeople > 10) {
groupSize = 2 * groupSize;
}
else {
groupSize = 3 * groupSize;
numPeople = numPeople - 1;
}

If numPlayers is greater than 11, execute teamSize = 11. Otherwise, execute
teamSize = numPlayers. Then, no matter the value of numPlayers, execute
teamSize = 2 * teamSize. - ANSWERif (numPlayers > 11) {
teamSize = 11;
}
else {
teamSize = numPlayers;
}
teamSize = 2 * teamSize;

Braces - ANSWERsurrounds a branch's statements. {},sometimes redundantly called
curly braces represent a grouping, such as a grouping of statements.

rational operator / equality operator - ANSWERAn if-else expression commonly
involves.

,Boolean value - ANSWEReither true or false. If userAge is 19, then userAge<25
evaluates to true.

a is equal to b - ANSWERa==b

a != b - ANSWERa is not equal to b or differ

!= - ANSWERDiffer or less than or greater than

centsLost is a negative number - ANSWER< 0 is the common way to detect a
negative number.

Strings are equal - ANSWERif they have they have the same number of characters
and corresponding characters are identical.

nested if-else - ANSWERA branch's statements can include any valid statements,
including another if-else statements, such occurrence known as nested if-else
statements.

logical operator - ANSWERtreats operands as being true or false, and evaluates to
true or false.

a && b - ANSWERLogical AND: true when both of its operands are true

a || b - ANSWERLogical OR: true when at least one of its two operands are true

!false - ANSWERTRUE

! - ANSWERNOT

!a - ANSWERLogical NOT (opposite): true when its single operand is false (and false
when operand is true)

!((numPeople > 10) && (numCars > 2)) - ANSWERThe && expression is false. So !
(false) is true.

% - ANSWERmodulo (remainder

modf - ANSWERBreak into fractional and integral parts.

Iterate until c equals 'z' - ANSWERc != 'z'

bool(short for Boolean) - ANSWERdata type is for variables that store only values
true or false.

Binary operators - ANSWERThe relational operators and logical operators (except
for !) are binary operators.
Take two operands (from the left and right) and evaluate to true or false.

, bitewise - ANSWERperform AND or OR on corresponding individual bits of the
operand.

Mixing bitwise and logical operators - ANSWERx == 3 | y > 1 && z != 3
Answer= ((x == 3) || (y > 1)) && (z!= 3)

Short circuit evaluation - ANSWERskips evaluating later operands if the result of the
logical operator can already be determined.

Switch - ANSWERstatement can more clearly represent multi-branch behavior
involving a variable being compared to constant values.

case - ANSWERwhose constant comparison matches the value of the switch
expression, executes that case's statements, and then jumps to the end.

default case - ANSWERin no case matches, statements are executed

break - ANSWERstatement for a case will cause the statements within the next case
to be executed.

Boolean - ANSWERrefers to a quantity that has only two possible values, true or
false.

bool - ANSWERfor representing Boolean quantities

index - ANSWEREach string character has a position number

at() - ANSWERthe notation someString. at (0) access the character at a particular
index of a string, in this case index 0.

common error - ANSWERis to access an invalid array index, especially exactly one
larger than the largest index.

exception - ANSWERis a detected runtime error that commonly prints an error
message and terminates the program.

Good practice - ANSWERis to use .at() rather than brackets for accessing a string's
characters, due to .at()'s error checking.

conditional expression - ANSWERcondition ? exprWhenTrue : exprWhenFalse

ternary operator - ANSWERA conditional expression has three operands and thus
the "?" and ":" together are sometimes referred to.

epsilon - ANSWERThe difference threshold indicating that floating- point numbers
are equal.Epsilon's value depends on the program's expected values, but 0.0001 is
common.

loop - ANSWERis a construct that repeatedly executes specific code as long as
some condition is true

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