Midterm 1

Question 1

Computer Programming Discipline

Answer 1

Is a part of informatics (computer science) which studies methods and techniques for developing, analyzing and applying algorithms and programs that can be used for solving different problems by means of computers.

Question 2

Algorithm

Answer 2

Is a set of operations (actions) and order of there execution (step by step procedure) for solving a given problem.

Question 3

Forms of algorithm representation (description)

Answer 3

1) natural form - by using human and other languages:
2) graphical form – by using flowchart (a diagram consists of special symbols of operations linked between them);
3) a pseudo-code – by using special rules for operations
description and a computer program – by using programming languages.

Question 4

Graphical symbols of operations: Starting operation

Answer 4

{ - opening brace, (start)

Question 5

Graphical symbols of operations: Ending operation

Answer 5

return statement;
} - closing brace
(stop)

Question 6

Graphical symbols of operations: Input operation

Answer 6

scanf( );
/__/

Question 7

Graphical symbols of operations: Output operation

Answer 7

printf( );
|~|

Question 8

Graphical symbols of operations: Calculation operation or
Assignment operation

Answer 8

assignment statement: variable = expression;
|__|

Question 9

Graphical symbols of operations: Decision (conditional)
operation

Answer 9

if(condition){statements Yes;}
else {statements No;}
<>

Question 10

Graphical symbols of operations: Precondition loop operation

Answer 10

for(ex.1; ex.2; ex.3)
{statements of loop body;}

<_>
</_>

Question 11

Graphical symbols of operations: Subprogram call operation

Answer 11

subprogram call statement;
||__||

Question 12

Parts of any program written in C language:

Answer 12

a) preprocessor directives;
b) one or more texts of functions (subprograms);
c) declarations situated out of the function bodies;

Question 13

Structure of a function in C language:

Answer 13

a) header line of the function;
b) body of the function which is situated between opening and closing braces.

Question 14

format specifier integer

Answer 14

%d

Question 15

format specifier float

Answer 15

%f

Question 16

format specifier double float

Answer 16

%lf

Question 17

format specifier char

Answer 17

%c

Question 18

switch statement

Answer 18

switch (age) {
case 1: printf(“You’re one.”); break;
case 2: printf(“You’re two.”); break;
case 3: printf(“You’re three.”);
case 4: printf(“You’re three or four.”); break;
default: printf(“You’re not 1,2,3 or 4!”);
}

Question 19

break

Answer 19

is used to jump out of a switch or loop;

Question 20

continue

Answer 20

breaks one iteration (in the loop) and continues with the next one;

Question 21

goto

Answer 21

is used to transfer the program control to a predefined label;