Solved : M3-R4: PROGRAMMING & PROBLEM SOLVING THROUGH ‘C’ LANGUAGE , January 17

Solved :NIELIT (O-Level)  M3-R4: PROGRAMMING & PROBLEM SOLVING THROUGH ‘C’ LANGUAGE , January 17

1. Each question below gives a multiple choice of answers. Choose the most answer sheet supplied with the question paper, following instructions therein.

1.1 : Which of the following software translates source code into object code?

A) Compiler

B) Interpreter

C) Assembler

D) None

Answer

1.2 : Which one of the following is not a keyword in C language?

A) main

B) endl

C) float

D) switch

Answer

1.3 : Identify the invalid character constant:

A) '\n'

B) '$'

C) '12'

D) 'p

Answer

1.4 : What is the binary number equivalent of the decimal number 12?

A) 1100

B) 1010

C) 1001

D) 1110

Answer

1.5 : Determine the order of evaluation of operations within the expression A<B&&C||D>A

A) &&, ||, <, >

B) <, >, &&, ||

C) >, <, &&, ||

D) &&,<, >, |

Answer

1.6 : How many times the printf statement within the while loop will be executed?

x=1;

while(x=0)

 printf("hello");

A) 1

B) 0

C) infinite

D) 2

Answer

1.7 : Find the output generated by the given program.

#include <stdio.h.

void main()

{

 printf("Bre\nak");

}

A) Break

B) Bre\nak

C) Break

D) None

Answer

1.8 : Which of the following is not an iterative statement?

A) switch

B) while

C) do while

D) for

Answer

1.9 : Identify the storage class with which & operator cannot be used.

A) register

B) static

C) extern

D) auto

Answer

1.10 : Identify the invalid declaration:

A) int &p;

B) int *p[10];

C) int **p;

D) int *p[ ];

Answer

2. Each statement below is either TRUE or FALSE. Choose the most appropriate one sheet supplied with the question paper,following instructions therein. (1x10)

2.1 The expressions on the both sides of a logical operator are always evaluated.

2.2 exit() function is defined in stdio.h header file.

2.3 for( ; i<2; i++); statement will result in compilation error.

2.4 At the time of initialization of an array, dimension of the array need not to be specified.

2.5 Actual parameters are used at the time of function calling.

2.6 static storage class is used to make a variable global.

2.7 Array is passed to a function using 'call by value' method.

2.8 Pointers are used in a program to allocate memory before the program execution.

2.9 All the members of a union should be of same type.

2.10 The function strlen() computes the length of an argument string excluding the null character.

Answer

3. Match words and phrases in column X with the closest related meaning/ word(s)/phrase(s) in column Y. following instructions therein.

X		Y
3.1	Symbol '='	A.	used with function
3.2	Void	B.	To terminate a loop
3.3	char *c[10];	C.	To declare global variable
3.4	calloc()	D.	c is array of size 10 where each element is a pointer to character
3.5	char (*c)[10]	E.	conio.h
3.6	Break	F.	storage class
3.7	Return	G.	c is a pointer pointing to string of size 10
3.8	Extern	H.	A function does not return anything
3.9	clrscr()	I.	an equality operator in C
3.10	call by reference	J.	assignment operator
		K.	stdio.h
		L.	Allocates memory and clears it
		M.	to get updated values of formal parameters of the function

Answer

4. Each statement below has a blank space to fit one of the word(s) or phrase(s) in the list below. the question paper, following instructions therein. 

A.	Flowchart	B.	ctype.h	C.	typecast
D.	Two	E.	structured	F.	four
G.	Ternary	H.	getch()	I.	three
J.	Array	K.	go to	L.	Auto
M.	Psuedocode

4.1                       _ operator converts an expression to a specified type.

4.2          The conditional operator (?:) is a                operator.

4.3          Tool                is used for program design.

4.4                       _ statement is used for unconditional branching in C.

4.5          Input function                does not show the character read from the input device.

4.6                       _ is a derived data type.

4.7          Function isdigit() is defined in               header file.

4.8          By default, storage class of local variables is              .

4.9          The output of 14 % 4 is              _.

4.10 The size of long integer data type is _    

Answer

PART TWO

(Answer any FOUR questions)

5.

a) Write a function fnpow() in C to compute xy where x is float and y is integer. Function will return the result and takes x, y as arguments

b) Write a function fnmat() which takes matrix, m, n as arguments where matrix is of size mXn with m as rows and n as columns. Function should return the maximum and minimum elements of the matrix. Elements of matrix are of integer type.

c) Find the output of the following:

char p[] = "%d\n";

 p[1] = 'c';

 printf(p, 65);

 int k=40, *a;

 a=&k;

 (*a)++; k++;

 printf("\n k=%d",k);

Output : 

Program won't run because the variable declaration must be performed first before any statement. and in the above program variable k and pointer, a declared after many statements which raise an error.

6.

a) Write a program using command line parameters to append one text file to another text file.

b) Write down one similarity and one dissimilarity between break and continue statements.

c) A programmer wants to use two variables session and info. Variable session can take three values (morning, afternoon, evening) ly. Using variable info, the programmer wants to access information empname and empid of 30 employees. Name the appropriate data type used for each variable session and info and declare the variables.

7.

a) Given array a[10][10] of integer where each integer takes 4 bytes. Given the base address of array a as 4000, find address of a[4][5] assuming array is stored as row-major order.

Answer : 

b) Write a file statement to place a file pointer (fp) at the beginning of the record number (say R), where record size is B bytes.

c) Differentiate between struct and union. When is union preferred over struct? Give one example for each

8.

a) Write a program to create a stack of integers using link-list and display it.

b) What is macro? Define a macro to compute maximum of two arguments passed to it.

9.

a) 

 i) Explain differences between:

 i) Text file and binary file

 ii) static and extern storage class

b) Write down the objective of following function:

 void f1(char s[], char c)

 {

   int i ,j ;

   for(i=j=0; s[i] != '\0'

   if (s[i]!=c) s[j++]=s[i];

  s[ j ] = '\0'

  return;

 }

Answer : 

Remove the given character C in function argument from the array.

c) Explain the meaning of following declarations:

i) int *p(char *a[])
Answer : 
int* p(char a[]) means p is a function that takes a literal string as an argument and return a pointer to integer.

ii) int *p(char *a, char *b)
Answer : 
 int *p(char *a, char *b) means p is a function that will take two character pointer and return a pointer to integer.

iii) int (*p) (char *a)[] (++)

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