SECTION-A
Write the programs for the
following problems in C.
1. Swap two variables x,y without using a
temporary variable.
2. Write algorithm for finding the GCD of a
number.
3.Write a program for reversing the given string.
4. The integers from 1 to n are stored in an array in a
random
fashion. but one integer is missing. Write a
program to find the
missing integer.
Ans). Hint : The sum of n natural numbers is =
n(n+1)/2.
if we subtract the
above sum from the sum of all
the
numbers in the array ,
the result is nothing but
the
missing
number.
5. Some bit type of questions has been given on pointers
asking to
to find whether it is correct from syntax point
of view. and if
it is correct explain what it will
do.(around 15 bits).
SECTION-B
6. For the
following C program
#define AND &&
#define ARRANGE (a>25 AND
a<50)
main()
{int a = 30;
if (ARRANGE)
printf("within
range");
else
printf("out of range");
}
What is the output?
7. For the following C program
#define AREA(x)(3.14*x*x)
main()
{float
r1=6.25,r2=2.5,a;
a=AREA(r1);
printf("\n Area of the circle is %f",
a);
a=AREA(r2);
printf("\n Area of the circle is %f", a);
}
What is the output?
Ans. Area of the circle is
122.656250
Area of the circle
is 19.625000
8. What do the following statements indicate.
Explain.
Refer to:
-- Kernighan & Ritchie page no.
122
-- Schaum series page no. 323
9. Write a C program to find whether a stack is progressing in
forward
or reverse direction.
10. Write a C program that reverses the linked
list.