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working with right shift operators in C

ruchi kataria

I am facing a problem in using the right shift operator in C with keil.
The instruction is:for(i=0;i<=8;i++) { j=sum>>i; }
where sum= 32 bit no.
the instruction is not executed if the syntax is as shown above. but if i write a numerical value instead of using the variable name 'sum' then the instruction is easily executed. i need to use the variable name only. how do i fix this problem?

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