Java Programming - Flow Control - Discussion
Discussion Forum : Flow Control - Finding the output (Q.No. 5)
5.
What will be the output of the program?
public class If2
{
static boolean b1, b2;
public static void main(String [] args)
{
int x = 0;
if ( !b1 ) /* Line 7 */
{
if ( !b2 ) /* Line 9 */
{
b1 = true;
x++;
if ( 5 > 6 )
{
x++;
}
if ( !b1 )
x = x + 10;
else if ( b2 = true ) /* Line 19 */
x = x + 100;
else if ( b1 | b2 ) /* Line 21 */
x = x + 1000;
}
}
System.out.println(x);
}
}
Answer: Option
Explanation:
As instance variables, b1 and b2 are initialized to false. The if tests on lines 7 and 9 are successful so b1 is set to true and x is incremented. The next if test to succeed is on line 19 (note that the code is not testing to see if b2 is true, it is setting b2 to be true). Since line 19 was successful, subsequent else-if's (line 21) will be skipped.
Discussion:
24 comments Page 2 of 3.
Saad said:
1 decade ago
If(b==true) is equivalent to if(b).
But if(b=true) first assigns true value to b and then check the condition.
But if(b=true) first assigns true value to b and then check the condition.
Juaneco said:
3 years ago
Here b2 takes the true value.
if ( b2 = true ).
Here it is checked if b2 is true.
if ( b2 == true ).
if ( b2 = true ).
Here it is checked if b2 is true.
if ( b2 == true ).
(1)
Pandu said:
1 decade ago
Can we assign a value to a variable in if condition that mean if (x=5). Is it applicable or not?
Boopathi said:
1 decade ago
Why not consider this part? Please explain.
if(5>6)
{
x++;
}
if(!b)
{
x=x+10;
}
if(5>6)
{
x++;
}
if(!b)
{
x=x+10;
}
Divesh Singla said:
10 years ago
if ( 5 > 6 )
{
x++;
}
if ( !b1 )
x = x + 10;
Why this part is not considered?
{
x++;
}
if ( !b1 )
x = x + 10;
Why this part is not considered?
Arun said:
9 years ago
In this statement, if(b2=true) first assign b2 value as true then check condition.
Yami said:
9 years ago
This will compile? Explain.
"else if (b2 = true) /* Line 19 */ ".
b2 = true ?
"else if (b2 = true) /* Line 19 */ ".
b2 = true ?
(1)
Kishan said:
9 years ago
x must be 1001, assignment is not allowed inside an if statement in Java .
Geeta said:
9 years ago
A question is wrong. Kindly correct it at.
X = x + 1000.
X = x + 1000.
Isha said:
1 decade ago
What is the meaning of operator | ? please do reply.
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