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Question

What is the output of this C code? 
#include <stdio.h>
    #include <math.h>
    void main()
    {
        int k = sqrt(-4);
        printf("%d\n", k);
    }

a.

-2

b.

2

c.

Compile time error

d.

NaN

Posted under C Programming

Answer: (d).NaN

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Q. What is the output of this C code?
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