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多选题
Which code fragments will succeed in initializing a two-dimensional array named tab with a size that will cause the expression tab[3][2] to access a valid element?()   CODE FRAGMENT a:  int[][] tab = {  { 0, 0, 0 },  { 0, 0, 0 }  };   CODE FRAGMENT b:  int tab[][] = new int[4][];  for (int i=0; i   CODE FRAGMENT c:  int tab[][] = {  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0  };   CODE FRAGMENT d:  int tab[3][2];   CODE FRAGMENT e:  int[] tab[] = { {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0} };
A

Code fragment a.

B

Code fragment b.

C

Code fragment c.

D

Code fragment d.

E

Code fragment e.


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更多 “多选题Which code fragments will succeed in initializing a two-dimensional array named tab with a size that will cause the expression tab[3][2] to access a valid element?()   CODE FRAGMENT a:  int[][] tab = {  { 0, 0, 0 },  { 0, 0, 0 }  };   CODE FRAGMENT b:  int tab[][] = new int[4][];  for (int i=0; i   CODE FRAGMENT c:  int tab[][] = {  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0  };   CODE FRAGMENT d:  int tab[3][2];   CODE FRAGMENT e:  int[] tab[] = { {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0} };ACode fragment a.BCode fragment b.CCode fragment c.DCode fragment d.ECode fragment e.” 相关考题
考题 You need to write a code segment that transfers the first 80 bytes from a stream variable named stream1 into a new byte array named byteArray.You also need to ensure that the code segment assigns the number of bytes that are transferred to an integer variable named bytesTransferred.Which code segment should you use?()A.bytesTransferred=stream1.Read(byteArray,0,80);B.C.D.

考题 有以下程序: include include usingnamespacestd; intmain() {intarrays 有以下程序: #include <iostream> #include <cstdlib> using namespace std; int main() { int arraysize; int *array; cout<<"Please input the size of the array:"; cin>>arraySiZe; array=new int[arraysize]; if(array==NULL) { cout<<"allocate Error\n"; exit(1); } for(int i=0;i<arraysize;i++) array[i]=i*i; int j; cout<<"which element you want to check:"; cin>>j; cout<<array[j]<<end1; return 0; } 执行程序输入:10<空格>5,则输出结果为( )。A.allocate ErrorB.1C.0D.25

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考题 1. public class Blip {  2. protected int blipvert(int x) { return 0; }  3. }  4. class Vert extends Blip {  5. // insert code here  6. }  Which five methods, inserted independently at line 5, will compile?()  A、 public int blipvert(int x) { return 0; }B、 private int blipvert(int x) { return 0; }C、 private int blipvert(long x) { return 0; }D、 protected long blipvert(int x, int y) { return 0; }E、 protected int blipvert(long x) { return 0; }F、 protected long blipvert(long x) { return 0; }G、protected long blipvert(int x) { return 0; }

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考题 单选题Click the Exhibit button.   What is the result?()A  The code will deadlock.B  The code may run with output "2 0 6 4".C  The code may run with no output.D  The code may run with output "0 6".E  An exception is thrown at runtime.F  The code may run with output "0 2 4 6".

考题 多选题Given the following class, which statements can be inserted at position 1 without causing the code to fail compilation?()   public class Q6db8 {   int a;   int b = 0;   static int c;   public void m() {   int d;   int e = 0;   // Position 1   }   }Aa++;Bb++;Cc++;Dd++;Ee++;

考题 多选题Which code fragments will succeed in initializing a two-dimensional array named tab with a size that will cause the expression tab[3][2] to access a valid element?()   CODE FRAGMENT a:  int[][] tab = {  { 0, 0, 0 },  { 0, 0, 0 }  };   CODE FRAGMENT b:  int tab[][] = new int[4][];  for (int i=0; i   CODE FRAGMENT c:  int tab[][] = {  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0  };   CODE FRAGMENT d:  int tab[3][2];   CODE FRAGMENT e:  int[] tab[] = { {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0} };ACode fragment a.BCode fragment b.CCode fragment c.DCode fragment d.ECode fragment e.

考题 单选题What will be the result of attempting to compile and run the following code?()   public class Q6b0c {   public static void main(String args[]) {  int i = 4;  float f = 4.3;   double d = 1.8;   int c = 0;   if (i == f) c++;   if (((int) (f + d)) == ((int) f + (int) d))  c += 2;   System.out.println(c);   }   }A The code will fail to compile.B 0 will be written to the standard output.C 1 will be written to the standard output.D 2 will be written to the standard output.E 3 will be written to the standard output.

考题 单选题Which code fragments will succeed in printing the last argument given on the command line to the standard output, and exit gracefully with no output if no arguments are given?()   CODE FRAGMENT a:   public static void main(String args[]) {   if (args.length != 0)   System.out.println(args[args.length-1]);   }   CODE FRAGMENT b:   public static void main(String args[]) {   try { System.out.println(args[args.length]); }   catch (ArrayIndexOutOfBoundsException e) {}   }   CODE FRAGMENT c:   public static void main(String args[]) {   int ix = args.length;   String last = args[ix];   if (ix != 0) System.out.println(last);   }   CODE FRAGMENT d:   public static void main(String args[]) {   int ix = args.length-1;   if (ix  0) System.out.println(args[ix]);   }   CODE FRAGMENT e:   public static void main(String args[]) {   try { System.out.println(args[args.length-1]);  }catch (NullPointerException e) {}   }A Code fragment a.B Code fragment b.C Code fragment c.D Code fragment d.E Code fragment e.

考题 多选题1. public class Blip {  2. protected int blipvert(int x) { return 0; }  3. }  4. class Vert extends Blip {  5. // insert code here  6. }  Which five methods, inserted independently at line 5, will compile?()Apublic int blipvert(int x) { return 0; }Bprivate int blipvert(int x) { return 0; }Cprivate int blipvert(long x) { return 0; }Dprotected long blipvert(int x, int y) { return 0; }Eprotected int blipvert(long x) { return 0; }Fprotected long blipvert(long x) { return 0; }Gprotected long blipvert(int x) { return 0; }

考题 多选题Which two code fragments correctly create and initialize a static array of int elements?()AABBCCDD

考题 多选题Which two code fragments correctly create and initialize a static array of int elements()Astatic final int[]a={100,200};Bstatic final int[]a;static{a=new int[2];a[0]=100;a[1]=200;}Cstatic final int[]a=new int[2]{100,200};Dstatic final int[]a;static void int(){a=new int[3];a[0]=100;a[1]=200;}

考题 多选题Which two code fragments are most likely to cause a StackOverflowError?()Aint []x = {1,2,3,4,5};for(int y = 0; y  6; y++)    System.out.println(x[y]);Bstatic int[] x = {7,6,5,4};static { x[1] = 8;x[4] = 3; }Cfor(int y = 10; y  10; y++)doStuff(y);Dvoid doOne(int x) { doTwo(x); }void doTwo(int y) { doThree(y); }void doThree(int z) { doTwo(z); }Efor(int x = 0; x  1000000000; x++) doStuff(x);Fvoid counter(int i) { counter(++i); }

考题 单选题Which fragment is an example of inappropriate use of assertions? ()A  assert (!(map.contains(x))); map.add(x);B  if (x  0){}else { assert (x==0); }C  public void aMethod(int x) { assert (x  0); }D  assert (invariantCondition()); return retval;E  switch (x) { case 1: break; case 2: creak; default: assert (x == 0);

考题 多选题Which two code fragments correctly create and initialize a static array of int elements?()Astatic final int[] a = { 100,200 };Bstatic final int[] a; static { a=new int[2]; a[0]=100; a[1]=200; }Cstatic final int[] a = new int[2] { 100,200 };Dstatic final int[] a; static void init() { a = new int[3]; a[0]=100; a[1]=200; }