Let us C Chapter 5 and 6 problems

Note-Please Attempt problem from your own first.Otherwise click on the link question to get the solution.

Chapter 5 Problem [D][a]

Question-Write a function to calculate the factorial value of any integer entered through the keyboard. 

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Chapter 5 Problem [D][b]

Write a function power ( a, b ), to calculate the value of a raised to b. 

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Chapter 5 solutions Problem[D][d]

Question-Any year is entered through the keyboard. Write a function to determine whether the year is a leap year or not

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Chapter 5 solutions Problem[D][e]

Question-A positive integer is entered through the keyboard. Write a function to obtain the prime factors of this number.

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Chapter 5 Solutions Problem[D][c]

Question-Write a general-purpose function to convert any given year into its roman equivalent. The following table shows the roman equivalents of decimal numbers: Decimal  Roman             Decimal  Roman 

                                                                           1               i                  100          c 

                                                                           5               v                   500         d 

                                                                          10              x                   1000       m 

                                                                          50             l 

 Example: Roman equivalent of 1988 is mdcccclxxxviii 

                Roman equivalent of 1525 is mdxxv

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Chapter 5 Problem[F][a]

Write a function which receives a float and an int from 
main( ), finds the product of these two and returns the product which is printed through main( ). 

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Chapter 5 Problem[F][b]

Write a function that receives 5 integers and returns the sum, average and standard deviation of these numbers. Call this function from main( )and print the results in main( ). 

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Chapter 5 Problem[F][c]

Write a function that receives marks received by a student in 3 subjects and returns the average and percentage of these marks. Call this function from main( )and print the results in main( ). 

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Chapter 5 Problem [J][a]

A 5-digit positive integer is entered through the keyboard, write a function to calculate sum  of digits of the 5-digit number: (1)  Without using recursion (2)  Using recursion 

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Chapter 5 Problem [J][b]

 A positive integer is entered through the keyboard, write a program to obtain the prime factors of the number. Modify the function suitably to obtain the prime factors recursively

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Chapter 5  Problem[J][c]

Write a recursive function to obtain the first 25 numbers of a Fibonacci sequence. In a Fibonacci sequence the sum of two successive terms gives the third term.Following are the firstfew terms of the Fibonacci sequence: 1 1 2 3  5 8 13 2134 55 89..

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Chapter 5 solutions problem [J][e]

Question-Write a function to obtain the running sum of first 25 natural numbers.

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Chapter 5 Problem [J][f]

Write a C function to evaluate the series

 sin(x)=x-x^3/3!+x^5/5!-----up to 5 decimal digits.

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Chapter 5 Problem [J][g]

Given three variables x, y, z writea function to circularly shifttheir values to right. In other words if x = 5, y= 8, z = 10 after circular shift y= 5, z = 8,x =10 after circular shift y= 5, z = 8and x = 10. Call the function with variables a,  b,  c to circularly shift values.

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chapter 5 Problem [J][k]

Question-Write a function to compute the greatest common divisor given by Euclid’s algorithm, exemplified for J = 1980, K =1617 as follows:

 1980/ 1617 = 1 

1980– 1* 1617 = 363

 1617/ 363 = 4  1617– 4* 363= 165

 363 / 165= 2  363 – 2 * 165= 33

 5 / 33= 5  165 – 5 * 33 = 0

 Thus, the greatest common divisor is 33. 

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Chapter 5 problem [J][j]

Write a function to compute the distance betweentwo points and use it to develop another function that will compute thearea of the triangle whose vertices are A(x1, y1), B(x2, y2), and C(x3, y3). Use these functions to develop a function which returns a value 1 if the point (x, y)lines inside the triangle ABC, otherwise a value 0. 

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Chapter  Problem [D]

Following program calculates the sum of digits of the number 12345. Go through it and find out why is it necessary to declare the storage class of the variable sum as static

. main( ) 

{ 

int a ;

 a = sumdig ( 12345 ) ; 

printf ( "\n%d", a ) ; }

 sumdig ( int num )

 { static int sum ;

 int a, b ; 

a = num % 10 ; 

b = ( num - a ) / 10 ; 

sum = sum + a ;

 if ( b != 0 ) sumdig ( b ) ;

 else return ( sum ) ; 

} 

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Chapter 6  Problem [A][c]

Question-

int i = 0 ;

 main( )

 {

printf ( "\nmain's i = %d", i ) ;

 i++ ;

 val( ) ; 

printf ( "\nmain's i = %d", i ) ;

 val( ) ;

 }

 val( )

 {

 i = 100 ; 

printf ( "\nval's i = %d", i ) ;

 i++ ;

 } 

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chapter 6 solutions problem [A][d]

Question-
main( ) 
{ 
int x, y, s = 2 ; 
s *= 3 ; 
y = f ( s ) ; 
x = g ( s ) ; 
printf ( "\n%d %d %d", s, y, x ) ; 
} 
int t = 8 ; 
f ( int a ) 
{ 
a += -5 ; 
t -= 4 ; 
return ( a + t ) ; 
} 
g ( int a ) 
{ 
a = 1 ; 
t += a ; 
return ( a + t ) ; 
}

Here is link of the solution :-

http://artofc.blogspot.in/2013/08/chapter-6-solutions-problem-ad.html

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                                                               ( END)