Object Oriented Programming - I (3140705) MCQs

MCQs of Selections , Mathematical functions and loops

Showing 11 to 20 out of 38 Questions
1 2 3 4
11.
In java, ............ can only test for equality, where as .......... can evaluate any type of the Boolean expression.
(a) switch, if
(b) if, switch
(c) if, break
(d) continue, if
Answer:

Option (a)

12.
Which of the following for loops will be an infinite loop?
(a) for (;;)
(b) for (i=0;i<1;i--)
(c) for(i=0;;i++)
(d) All of the above
Answer:

Option (d)

13.
Determine output: 
public class Test{
        public static void main(String args[]){
                int i; 
                for(i = 1; i < 6; i++){ 
                        if(i > 3) continue ; 
                }
                System.out.println(i); 
        }
}
(a) 2
(b) 3
(c) 4
(d) 6
Answer:

Option (d)

14.
Consider the following program written in Java. 
class Test{
        public static void main(String args[]){
                int x=7; 
                if(x==2); 
                System.out.println("NumberSeven");
                System.out.println("NotSeven");
        }
}
What would the output of the program be?
(a) NumberSeven NotSeven
(b) NumberSeven
(c) NotSeven
(d) Error
Answer:

Option (a)

15.
Determine output: 
public class Test{
        public static void main(String args[]){
                int i, j;
                for(i=1, j=0;i<10;i++) j += i;
                System.out.println(i);
        }
}
(a) 10
(b) 11
(c) 9
(d) 20
Answer:

Option (a)

16.
What will be the value of y after execution of switch statement? 
public class Test{
        public static void main(String[] args){
                int x = 3, y = 4;
                switch(x + 3){
                        case 6: y = 0;
                        case 7: y = 1;
                        default: y += 1;
                }
        }
}
(a) 1
(b) 2
(c) 3
(d) 4
Answer:

Option (b)

17.
What is the printout of the following switch statement? 
char ch = 'a';  
switch (ch){
      case 'a':
      case 'A': System.out.print(ch); break;
      case 'b':
      case 'B': System.out.print(ch); break;
      case 'c':
      case 'C': System.out.print(ch); break;
      case 'd':
      case 'D': System.out.print(ch);
}
(a) abcd
(b) aa
(c) a
(d) ab
Answer:

Option (c)

18.
How many times will the following code print "Welcome to DIET"? 
int count = 0;
do {
      System.out.println("Welcome to DIET");
      count++;
} while (count < 10);
(a) 8
(b) 9
(c) 10
(d) 11
Answer:

Option (c)

19.
What will be the result of the following code? 
public class Test{
      static public void main(String args[]){ //line 2
            int i, j;
            for(i=0; i<3; i++){
                  for(j=1; j<4; j++){
                        i%=j;
			System.out.println(j);
		  }
	    }
      }
}
(a) 1 2 3 1
(b) 1 2 3 2
(c) Repeatedly print 1 2 3 and cause infinite loop.
(d) Compilation fails because of line 2
Answer:

Option (c)

20.
What all gets printed when the following program is compiled and run. 
public class Test{
      public static void main(String args[]){ 
            int i, j=1;
            i = (j>1)?2:1;
            switch(i){
                  case 0: System.out.println(0); break;
                  case 1: System.out.println(1);
                  case 2: System.out.println(2); break;
                  case 3: System.out.println(3); break;
            }
      }
}
(a) 0
(b) 1
(c) 2
(d) 1 2
Answer:

Option (d)

Showing 11 to 20 out of 38 Questions
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