Why does a 95 produce grade 'C'?

Answer: All ifs run; later assignments overwrite earlier ones. Use else if. Independent ifs all execute; with g=95 every condition is true, so the last assignment ('C') wins. Chain with else if for mutual exclusion.

What does this print when x = 5? <codeif (x 10) System.out.println("big"); else System.out.println("small"); </code</pre

Answer: small 5 is not 10, so else branch runs.

Answer: big These are two SEPARATE if statements (no else). With x = 10, both run. label is set to "positive" then overwritten to "big". Final value printed is "big".

AP Computer Science A · Topic 3.3

if-else Statements Practice

Q: What does this print when x = 5? <codeif (x 10) System.out.println("big"); else System.out.println("small"); </code</pre

Answer: small 5 is not 10, so else branch runs.

Q: What is printed?

Answer: big These are two SEPARATE if statements (no else). With x = 10, both run. label is set to "positive" then overwritten to "big". Final value printed is "big".

Part of Boolean Expressions and if Statements.

Practice questions

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Sample questions

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Sample 1difficulty 2/5
```
if (g >= 90) grade = 'A';
if (g >= 80) grade = 'B';
if (g >= 70) grade = 'C';
```
$Why does a 95 produce grade 'C'?$
- A
  $char cannot hold a grade$
- B
  $g must be a String$
- C
  $All ifs run; later assignments overwrite earlier ones. Use else if.$
  check_circle
- D
  $Nothing is wrong$
Why
$Independent ifs all execute; with g=95 every condition is true, so the last assignment ('C') wins. Chain with else if for mutual exclusion.$
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Sample 2difficulty 2/5
$What does this print when x = 5? <code> if (x > 10) System.out.println("big"); else System.out.println("small"); </code> </pre>$
- A
  $Nothing$
- B
  $big small$
- C
  $small$
  check_circle
- D
  $big$
Why
$5 is not > 10, so else branch runs.$
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Sample 3difficulty 3/5
```
int x = 10;
String label = "none";
if (x > 0) {
  label = "positive";
}
if (x > 5) {
  label = "big";
}
System.out.println(label);
```
$What is printed?$
- A
  $none$
- B
  $positive big$
- C
  $big$
  check_circle
- D
  $positive$
Why
$These are two SEPARATE if statements (no else). With x = 10, both run. label is set to "positive" then overwritten to "big". Final value printed is "big".$
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Sample 4difficulty 3/5
```
int n = 5;
if (n > 0)
  if (n > 10)
    System.out.println("big");
  else
    System.out.println("small");
```
$What is printed?$
- A
  $big$
- B
  $small$
  check_circle
- C
  $big small$
- D
  $nothing$
Why
$The else binds to the nearest unmatched if (n > 10). Since n = 5, n > 0 is true (enter), n > 10 is false (else), so "small" prints.$
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Sample 5difficulty 4/5
$For score = 85: <code> String grade; if (score >= 90) grade = "A"; else if (score >= 80) grade = "B"; else if (score >= 70) grade = "C"; else grade = "F"; </code> </pre> grade is$
- A
  $C$
- B
  $B$
  check_circle
- C
  $A$
- D
  $F$
Why
$85 >= 80 (after failing 90 check) \to "B".$
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