For knowing the sizes of different data types .,u can use the sizeof() operator.
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Data type C C++ Java
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int 2 2 4
char 1 1 2
long 4 4 8
float 4 4 8
double 8 8 16
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the above table is NOT true for my system/compiler (and I suspect for most people out there these days)
It's one of the reasons I refuse to get into such discussions except to say it's not something you need to know very often. In THIS case however, the table above is just W R O N G ! ! ! ! !
sizes is not different for signed int and unsigned int. i.e., size is just two bytes for an int datatype but the only difference between a signed int and unsigned is the range of values for the variable.
The values we can store in an signed int is -32768 to +32767 and the values we can store in an unsigned int is 0 to + some 65000(i don't remember the exact value).This means we can store only positive values in an unsigned and we can store both positive and negative values in unsigned int.
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There is no concept of signed and unsigned in java.
I hope u got my answer right.
All the best.
Ur Friend........
K.VENU GOPAL RAO
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