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  1. Which of the following is an external variable in the following C code?
     #include <stdio.h>
    int function(int p)
    {
    int q;
    return q;
    }
    int main()
    {
    int r;
    function(r);
    }
    int s;
    1. p
    2. q
    3. r
    4. s
    5. None of these
Correct Option: D

s



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