Computer Knowledge

Programming Output Evaluation

1,953 Questions

Programming output evaluation tests the ability to trace code execution in languages like C, Java, and SAS. It focuses on arrays, loops, pointers, and data type conversions. These technical questions are standard in computer knowledge sections for IT officer and bank exams.

Java string bufferC language pointersLoop execution outputsData type conversionsMacro variable evaluation

Programming Output Evaluation Questions

Multiple choice java

Which cause a compiler error?

int[ ] scores = {3, 5, 7};
int [ ][ ] scores = {2,7,6}, {9,3,45};
String cats[ ] = {"Fluffy", "Spot", "Zeus"};
boolean results[ ] = new boolean [] {true, false, true};

Reveal answer Fill a bubble to check yourself

Multiple choice java

Which one creates an instance of an array?

int[ ] ia = new int[15];
float fa = new float[20];
char[ ] ca = "Some String";
int ia[ ] [ ] = { 4, 5, 6 }, { 1,2,3 };

Reveal answer Fill a bubble to check yourself

Multiple choice java

What will the result for following code?

public class Yikes {
    public static void go(Long n) {System.out.println("Long ");}
    public static void go(Short n) {System.out.println("Short ");}
    public static void go(int n) {System.out.println("int ");}

    public static void main(String [] args) {
        short y = 6;
        long z = 7;
        go(y);
        go(z);
    }
}

int Long
Short Long
Compilation fails.
An exception is thrown at runtime.

Reveal answer Fill a bubble to check yourself

Multiple choice java

What will be the output?

public class Base {
  public static final String FOO = "foo";
  public static void main(String[] args) {
    Base b = new Base();
    Sub s = new Sub();
    System.out.print(Base.FOO);
    System.out.print(Sub.FOO);
    System.out.print(b.FOO);
    System.out.print(s.FOO);
    System.out.print(((Base)s).FOO);
  } 
}

class Sub extends Base {
    public static final String FOO="bar";
}

foofoofoofoofoo
foobarfoobarbar
foobarfoofoofoo
foobarfoobarfoo
barbarbarbarbar

Reveal answer Fill a bubble to check yourself

Multiple choice java

What is the output?

public class Wow {
 public static void go(short n) {System.out.println("short");}
 public static void go(Short n) {System.out.println("SHORT");}
 public static void go(Long n) {System.out.println(" LONG");}
 public static void main(String [] args) {
   Short y = 6;
   int z = 7;
   go(y);
   go(z);
 }
}

short LONG
SHORT LONG
Compilation fails.
An exception is thrown at runtime.

Reveal answer Fill a bubble to check yourself

Multiple choice java

What is the output?

interface TestA { String toString(); }
 public class Test {
 public static void main(String[] args) {
  System.out.println(new TestA() {
  public String toString() { return "test"; }
 });
 }
}

test
null
Compilation fails because of an error in line 1.
An exception is thrown at runtime.

Reveal answer Fill a bubble to check yourself

Multiple choice c

What is the output of the following piece of code?

int x = 3, y = 5, z;
z = x + ++y;

printf(“%d”,z);

8
9
10
11

Reveal answer Fill a bubble to check yourself

Multiple choice c

The main() function is:

to write output to the screen
the program entry point
Both correct
Both wrong

Reveal answer Fill a bubble to check yourself

Multiple choice c

To get a statement from the user input in the array char s[100]:

gets( s[100] );
gets( s[] );
gets( s );
none of the above

Reveal answer Fill a bubble to check yourself

Multiple choice c

what is the output of the following program

int change( int x ) {
 x = 7;
}

main(){
 int x = 5;
 change(x);
 printf(“%d”,x);    
}

5
7
9
unknown

Reveal answer Fill a bubble to check yourself

Multiple choice c

What is the output of the following piece of code:

int x = 7;
if ( x = 3 ) printf( “%d“ , x);

no output
7
3
5

Reveal answer Fill a bubble to check yourself

Multiple choice c

What is the output of the following piece of code?

int x = 3, y = 5, z ;
z = x++ + ++y;

printf(“%d”,z);

8
9
10
11

Reveal answer Fill a bubble to check yourself

Multiple choice c

what is the output of the following program

main(){
 int x;
 printf(“%d”,x);
}

Unknown (random value)
Zero
3000
4000

Reveal answer Fill a bubble to check yourself

Multiple choice c

what is the best choice to print the value of variable x where:

int x = 123;

printf("%f",x);
printf("%d",x);
printf("%c",x);
printf("%s",x);

Reveal answer Fill a bubble to check yourself

Multiple choice php

What is the value displayed when the following is executed? Assume that the code was executed using the following URL:

testscript.php?c=25

25
10
-5
0

Reveal answer Fill a bubble to check yourself

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