18-19, HK1_C Programming Language

1 HCMC UNIVERSITY OF TECHNOLOGY AND EDUCATION Faculty for High Quality Training Program name:_ECET FINAL EXAMINATION SEMESTER 1 – ACADEMIC YEAR 2018-2019 Course name: C Programming L

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HCMC UNIVERSITY OF

TECHNOLOGY AND EDUCATION

Faculty for High Quality Training

Program name:_ECET

FINAL EXAMINATION SEMESTER 1 – ACADEMIC YEAR 2018-2019 Course name: C Programming Language

Course ID: PRLA335164E Exam code: 01 Number of pages: 06

Duration: 90 minutes

Only used one A4-handwriting paper

Student writes answers directly in space reserved in exam paper and submit back all exam papers.

Signature of Proctor 1 Signature of Proctor 2

Marks / Signature

Signature of Marker 1 Signature of Marker 2

Student name:

Student ID:

Exam number: Exam room:

Question 1: (2.0/10) Give a following program, please perform:

#include "stdafx.h"

#include <stdio.h>

// function main begins program execution

int main(void)

{

unsigned int counter; // number of grade to be entered next

int grade; // grade value

int total; // sum of grades entered by user

int average; // average of grades

// initialization phase

total = 0; // initialize total

counter = 0; // initialize loop counter

// processing phase

while (counter < 5) { // loop 5 times

printf("%s", "Enter grade: "); // prompt for input scanf("%d", &grade); // read grade from user

total = total + grade; // add grade to total

counter = counter + 1; // increment counter

} // end while

// termination phase

average = total / counter; // integer division

printf("Class average is %d\n", average); // display result

} // end function main

a) Draw a flowchart?

b) Show contents on the screen after entering numbers as 6, 7, 8, 9, 10?

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c) Rewrite this program using “do…while”?

d) Rewrite this program using “for”?

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Question 2: (1.5/10) Show results on the screen after performing a following program:

#include <stdio.h>

void main()

{

int a[6] = { -2, -1, 0, 1, 2, 3};

int *p1 = &a[1];

int *p2 = &a[2];

*(p1 - 1) = 2**p2 - 4;

*p1 = *p2 + 3;

*p2 = *(p1 + 4) + *(p2 + 2);

++p2;

*(p2 + 2) = a[0] + ++a[1];

*(p2 + 1) = a[2] + a[3];

*p2 = *(p1 + 4) + *(p2 + 2) + 2;

printf("%d %d %d %d %d %d", a[0], a[1], a[2], a[3], a[4], a[5]);

}

Question 3: (1.5/10) Draw flowchart and write a complete program that calculates and prints the product of the odd integers from 1 to 9 Flowchart: Complete program: ………

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Question 4: (3.0/10)

- Edit bugs of a following program (2.0 points):

The program

#include <stdio.h>

#include <conio.h>

#include <malloc.h>

int Check(int x)

void main(void)

{

int n, *a, i, flag, max;

printf("Input n:” );

scanf("%f", &n);

a = (int*)malloc(n, sizeof(int));

for (i = 0; i < n; i++)

scanf("%d", *(a + i));

flag = 1;

for (i = 0; i < n; i++)

if (Check(*(a + i)) == 0)

{

flag = 0;

break;

}

if (flag == 0)

printf("Error data );

else

{

max = a;

for (i = 1; i < n; i++)

if (max < *(a + i))

printf("The maximum number: %d", max);

}

}

Edit bugs

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int Check(int x)

{

if (x >= 0 && *x <= 10)

return 1;

else

return 0;

}

- Assume that the above program is edited correctly, then

✓ When four numbers 3, 1, 3, 2 are inputted from the screen, what are results showed

on the screen next (0.5 point)?

✓ And for the case four numbers 3, 1, -3, 2 ? (0.5 point)

Question 5: (2.0/10) Write a complete program using dynamic memory allocation which executes functions as follows:

a) Create a structure type, named ENodeB, to describe a base station in the 4G mobile network The base stations will collect capacities and include information as follows:

✓ Base station name (named ENodeBname): string format

✓ Base station code (named ENodeBcode): integer number format

✓ Capacity value (named Capa): real number format

b) Enter information including name, code and capacity of N different base stations in which N

is entered from the keyboard (N>0)

c) Print all information of the base stations on the screen where their capacity values are larger than and equal 2.5

d) Print all information of the best base station on the screen which has the largest capacity value

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Note: Proctors are not allowed to give any unauthorized explanation

Learning outcome mapping Assessed in

[LO 1.1, 1.3]: Draw a flowchart, demonstrate command syntax, operation

and application of branching and iteration structures in C language

Question 1, 3

[LO 1.5]: Present how the pointer is declared and how to use the pointer to

retrieve the memory

Question 2, 4, 5

[LO 1.7]: Define structure type and use structure variables to store and

manage data

Question 5

[LO 2.1, 3.1]: Analyze the programming requirements from which to

build a flowchart, a complete program; apply control structures, apply

data manipulation, build support functions to design and solve application

programming requirements

Questions 1, 3, 5

18/12/2018

Approved by program chair

(signed and named)