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IGNOU > IGNOU Assignments > BCA > BCA 2006 Assignments > Introduction to System Software
IGNOU BCA Assignments
Question 1: Derive a regular grammar to describe the syntax of a conventional representation of floating point numbers in a programming language.
Ans:
<floating point number> : : = <signbit> <mantissa> <exponent>
<sign bit> : : = <positive> <negative>
: : = <0> <1>
<mantissa> : : = <single> <double>
<single> : : = <32 bit>
<double> : : = <64 bit>
<exponent> : : =<positive> <negative>
<Positive> : : = <Convert into binary no.>
<negative> : : = <Firstly find the 2’s complement>
: : = <represent into exponent part>
Question 2: Write a shell program to test whether the give year is a leap year or not.
Ans:
echo “Enter a year”
read a
if ($a % 4-eq 0 – 0 $a%100 – eq 0 – 0 $a%400 – eq 0) then
echo “$a is a leap year”
else
echo “$a is not a leapyear”
fi
