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Doubt in suffix for a variable

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Murugesh_89

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Hi,
Please let me know the reason..

My program is...

void main()
{
int a,b;

a = -1;
b = -1u;

if(a == b) do_task1;
else do_task2;
}

The condition passes and do the task1. Why is it so even though i made b as unsigned??

Need reason for this...
 

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