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IIT Madras interview - what is the output of the C code?

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int c=31, n;
scanf(“%d”,&n);
int k=n<<c;
if(k&&1) return 1;
return 0;
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This program is made for 32 bit platform

The output is used to detect whether the input number is odd or even.

As we all know odd number contains 1 as LSB and even number contains 0 as LSB

eg. n = 5 (binary form 101)

     k = 5<<31  //left sift 101 by 31 bit place

     in 32 bit platform, integer can hold only 32 bit of information, therefore it will drop 10 and store 1 at MSB place. 

     (binary form 1000000000000000000000000000000)

     therefore k = -2147483648 (in decimal form) which is non zero.

     hence evaluated as true when evaluating through bitwise And operation and return output as 1.   

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