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hexa decimal
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Shiva Mohan
Ranch Hand
Joined: Jan 05, 2006
Posts: 465
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class Q {
public static void main(String [] args) {
int x = 0x80000000;
System.out.print(x );
}
}
answer is -2147483648 if we take bit representation of hexa number 800000000 as
1000 0000 0000 0000 0000 0000 0000 0000.
But I always do my calculation like
1000 0000 0000 0000 0000 0000 0000 0000.(here we are just having 28 bits)so the remaning 4 bits are the begginnnig 0�s.
0000 1000 0000 0000 0000 0000 0000 0000 0000.(now the sign bit is positive,since it is positive ,my result is always 2147483648.i end up my calculation like this.)
Please help me.
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prashanth kumar
Ranch Hand
Joined: Mar 22, 2004
Posts: 162
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do calculation like this..
0x80000000;
0(*)16 pow 0 + 0(*)16 pow 1 + ............. + 8 (*)16 pow 7
Now the total value may exceed 2 pow 31 - 1
And hence it negates..
If i get a question like this,iam going to leave this 
Cheers
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SCJP1.5(86%)<br />SCWCD1.4(95%)<br />SCBCD1.3(92%)<br />IBM 252
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subject: hexa decimal
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