1) For IEEE 754 single precision floating point numbers, if X is a negative denormalized floating point number with mantisa   010  0000 0000  0000  0000  0000, what is the decimal value of X?   Question options:   a.   –1.25 × 2^(–126 )   b.   –1.25 × 2^(–127 )   c.   –0.25 × 2^(–127)   d.   –0.25 × 2^(–126 )   e.  None of the above 2) Which of following recursive C++ functions correctly computes a[0]+a[1]+...+a[n-1] (where n is the size of array a) ?   Question options:   int sum(int n, int a[] ){ return n>0? sum(n-1) + a[n]  :  a[0]; }   int sum(int n, int a[] ){ return n>0? sum(n-1, a) + a[n-1]  :  a[0]; }    int sum(int n, int a[] ){ return sum(n-1, a) + a[n-1] ; }   int sum(int n, int a[] ){ return n>0? sum(n-1, a) + a[n]  :  a[0]; }    int sum(int n, int a[] ){ return n>0? sum(n-1) + a[n-1] : a[0]; }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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1)

For IEEE 754 single precision floating point numbers, if X is a negative denormalized floating point number with mantisa   010  0000 0000  0000  0000  0000, what is the decimal value of X?
 

Question options:

 
a.   –1.25 × 2^(–126 )
 
b.   –1.25 × 2^(–127 )
 
c.   –0.25 × 2^(–127)
 
d.   –0.25 × 2^(–126 )
 
e.  None of the above

2)

Which of following recursive C++ functions correctly computes a[0]+a[1]+...+a[n-1] (where n is the size of array a) ?

 

Question options:

 

int sum(int n, int a[] ){ return n>0? sum(n-1) + a[n]  :  a[0]; }

 

int sum(int n, int a[] ){ return n>0? sum(n-1, a) + a[n-1]  :  a[0]; }

 

 int sum(int n, int a[] ){ return sum(n-1, a) + a[n-1] ; }

 

int sum(int n, int a[] ){ return n>0? sum(n-1, a) + a[n]  :  a[0]; }

 

 int sum(int n, int a[] ){ return n>0? sum(n-1) + a[n-1] : a[0]; }

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