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  1. What will be the output of the following C code?
     #include <stdio.h>
        int main()
        {
            unsigned int num = 20;
            num = ~num;
            printf("%d\n", num);
        }
    1. -21
    2. Compilation Error
    3. 20
    4. Runtime Error
    5. None of these
Correct Option: A

20


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