CH 2.B PROGRAMS/INSTRUCTIONS IN C

Question 1

Define c program.

Answer 1

c program is a collection of functions supported by c library

Question 2

state the use of following in program:

main()

Answer 2

main is an function in program which states the line from which the execution of program begins. every program must has main function.

Question 3

every program consist atleast one function in program and that function has to be ____.

Answer 3

main()

Question 4

state the use of following in program:

{}

Answer 4

{ brace bracket. denotes start of the function main. } denotes end of the function main(). includes instructions

Question 5

state the use of following in program: 
//

Answer 5

comment lines. non executable statements which are been ignored by the compiler. used for better understanding of the program by the compiler. helps in debugging and testing a program.

Question 6

program within {} is called the ____.

Answer 6

body of function main()

Question 7

main() body contains ___.

Answer 7

instructions to perform a task

Question 8

true or false: comment lines can be nested

Answer 8

false

Question 9

true or false: comment lines can be placed anywhere in the program

Answer 9

true

Question 10

true or false: /* */ is used to write comment over one line.

Answer 10

false. // is used

Question 11

____ must end with a semicolon

Answer 11

statements

Question 12

____ is a executable function used for printing the output in the program.

Answer 12

printf()

Question 13

___ ,___are a predefined function

Answer 13

printf()

scanf()

Question 14

what is an predefined function?

Answer 14

functions which are already been written nd compiled.

Question 15

state the use of following in program: /n

Answer 15

backslash character constant which prints the output on nextline

Question 16

true or false: the statements in c must be in specific order/position

Answer 16

false. c program can be in any position/order.

Question 17

c programs can be in uppercase, lowercase. but lowercase letters are for ___

Answer 17

symbolic constants

Question 18

c programs must be in ___

Answer 18

lowercase

Question 19

a c program must be written in ___ os and compiled in ___ compiler while executing a program in PC

Answer 19

msdos,dos

Question 20

a program must be created and edited in any wordprocessing application in ___ mode.

Answer 20

non document

Question 21

one must run a program file with ___ extension

Answer 21

.c

Question 22

sucessful compilation will generate _____ of your program.

Answer 22

object file

Question 23

while compiling a program, c compiler points out(reports) ___.

Answer 23

syntax errors

Question 24

state the process of execution of the program.

Answer 24

1. the program is been written. a program can be written and edited in any word processing document in non document mode.
2. the program is been debugged
3. program is been compiled
4. object file of the program is been generated
5. object file is been linked to execution file and file has .exe extension.
6. . program is been run the program file now has .c extension. the program can be run in msdos file by typing the name.

Question 25

write program for following: a basic c program

Answer 25

. refer txtbook

Question 26

write program for following: a program stating the use of backslash character constants.

Answer 26

. refer txtbook

Question 27

write program for following: a program using arithmetic operators (-,+,*,/,%)

Answer 27

. refer txtbook

Question 28

write program for following: program using relational operators.

Answer 28

refer txtbook

Question 29

write program for following: program using logical operators

Answer 29

refer txtbook

Question 30

write program for following: program using increment and decrement operators

Answer 30

refer txtbook

Question 31

write program for following: program using conditional operators

Answer 31

refer txtbook

Question 32

write program for following: program using bitwise operators

Answer 32

refer txtbook

Question 33

write program for following: program using sizeof() OR a program to show the memory size of int,float and char datatypes with subtypes like short,long...

Answer 33

refer txtbook

Question 34

write program for following: to calculate the area of square, rectangle, circle by taking values from user.

Answer 34

refer txtbook

Question 35

write program for following: performing integer arithmetic instructions

Answer 35

refer txtbook

Question 36

write program for following: performing real arithmetic

Answer 36

refer txtbook

Question 37

write program for following: performing mixed mode arithmetic

Answer 37

refer txtbook

Question 38

write program for following: using symbolic constants

Answer 38

refer txtbook

Question 39

write program for following: input the maximum temperature recorded in a day and calculate the avg temperature of the day

Answer 39

refer txtbook

Question 40

write program for following: convert temperature (fahreinheit) into celcius

Answer 40

refer txtbook

Question 41

write program for following: convert distance metres into cm

Answer 41

refer txtbook

Question 42

write program for following: take input in ist and print the current est time

Answer 42

refer txtbook

Question 43

write program for following: interchange 2 int values a,b

Answer 43

refer txtbook

Question 44

write program for following: to calculate SI

Answer 44

refer txtbook

Question 45

__ is denoted as post decrement of y. if value is 19. what would be the value.

Answer 45

y--

Question 46

State whether the following are True or False 1. Welcome” is a string constant. 2. 24676 is a int constant 3. you.2 is a valid variable 4. an identifier must begin with character

Answer 46

1. true 2. true 3. false . 4. false variable

Question 47

are foll valid variable names in c: 1. _pq 2. min_temp 3. 3s 4. add12

Answer 47

1. no 2. yes 3. no 4. yes

Question 48

state whether the foll declarations are valid; | int a="PQ";

Answer 48

NO

Question 49

state whether the foll declarations are valid; | p=12, float;

Answer 49

NO

Question 50

state whether the foll declarations are valid; int a,b

Answer 50

NO SEMICOLON

Question 51

state whether the foll declarations are valid; int a=10,n,r;

Answer 51

yes

Question 52

float p,w,int r,s;

Answer 52

no

Question 53

__ is bitwise and

Answer 53

refer txtbook

Question 54

__ is bitwise or

Answer 54

refer txtbook

Question 55

__ is bitwise exclusive or

Answer 55

refer txtbook

Question 56

<< is a bitwise operator and does ___

Answer 56

refer txtbook

Question 57

>> is a bitwise operator and does ___

Answer 57

refer txtbook

Question 58

~ is a bitwise operator and does ___.

Answer 58

refer txtbook

Question 59

state the output for foll: | txt book 39

Answer 59

refer txtbook

Question 60

state the values in variables: txtbook 43

Answer 60

refer txtbook