GATE Computer Science (CS) 2018 Shift 1 Solved Paper

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Question : 61 of 65

Marks: +1, -0

Consider the following C code. Assume that unsigned long int type length is 64 bits.

Unsigned long int fun (unsigned long int n) 
 { 
 unsigned long int i, j = 0, sum = 0; 
 for (I = n; I > 1; I = i/2) j++; 
 for (; j > 1; j = j/2) sum++; 
 return (sum); 
 }

The value returned when we call fun with the input

2^{40}

4
5
6
40

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