Second Semester Examination 

2016/2017 Academic Session 

June 2017

Duration : 3 hour

PPSM, Pusat Pengajian Sains Matematik

Repository@USM

       UNIVERSITI SAINS MALAYSIA  Second Semester Examination 2016/2017 Academic Session   June 2017  MAT181 – Programming For Scientific Applications [Pengaturcaraan Untuk Penggunaan Sains] Duration : 3 hours [Masa : 3 jam]     Please check that this examination paper consists of EIGHT pages of printed material before you begin the examination.  [Sila pastikan bahawa kertas peperiksaan ini mengandungi LAPAN muka surat yang bercetak sebelum anda memulakan peperiksaan ini.]   Instructions:  Answer all FOUR (4) questions. All answers must be written on the answer script papers provided.    [Arahan: Jawab semua EMPAT (4) soalan. Semua jawapan mestilah dituliskan pada kertas skrip jawapan yang disediakan.]     In the event of any discrepancies, the English version shall be used.  [Sekiranya terdapat sebarang percanggahan pada soalan peperiksaan, versi Bahasa Inggeris hendaklah diguna pakai.]    …2/- [MAT181] - 2 - ...3/- Question 1  (a)  Write the following algebraic expressions as C++ assignment statements. Assume  that all variables are declared correctly and necessary header files are already  included. (i)  / 4.5 5.0aAa b     (ii) 54ac zwx y x y    (b)  Given the following declarations:    int a, b, c;   double d, e, f, g, x, y, z;   and the current values of each variable are as follows:    a = -10,b = 5,c = 23,d=5.5,e=3.75,f=14.8, g=1.0;   x = 2.3, y = 8.5, z = 21.6;   What is the output of each of the following statements in the ordering as    shown?    cout << (a%(int)e - f );   cout << endl << (pow (d, c%abs(a++)));   cout << endl << (a/b + 1/c);   cout << endl << (g += 1.5 * 3 + ++g);        cout << endl << (z < y+x || z - 15 < x*y);   (c)  Combine the following four if statements to produce only ONE nested if…else  statement without compound conditions (i.e. conditions without the && operator)       if ((ch == 'F') && (pay > 1000))    x + = 1;   if ((ch == 'F') && (pay <= 1000))    x + = 2;   if ((ch == 'M') && (pay > 1000))    x + = 3;   if ((ch == 'M') && (pay <= 1000))    x + = 5;   (d) Refer to the following program segment for parts (i), (ii) and (iii).   : #define SIZE 100 void main() {   int V[SIZE];  void Read_in(...);  // For question (1)(d)(i)  void Sort(...);  // For question (1)(d)(ii)  void Repeating(...); // For question (1)(d)(iii)  [MAT181] - 3 - ...4/-  Read_in(...);  Sort(...);  Repeating(...); }  // function definitions :  (i) Write the function definition Read_in which reads in 100 values to the array V[] from a text file called input.txt. The file needs to be processed according to the complete file processing steps; declaration of file, opening of file, verification of file, closing of file, etc. must be within this function. (ii) Write the function definition Sort which sorts V[] according to the bubble sort algorithm and prints the sorted values on the screen in descending order. (iii) Write the function definition Repeating which determines whether there are repeated values in the array. If there are, the function should return the value 1. If not, the function should return the value 0. This value should be returned via reference parameter. The execution of this function should be terminated when the first repeated value is encountered.   Soalan 1   (a)  Tulis ungkapan-ungkapan aljabar berikut sebagai pernyataan umpukan C++.  Anggapkan semua pembolehubah telah diisytiharkan dengan betul dan semua fail  pengepala yang diperlukan telahpun disertakan.  i.  / 4.5 5.0aAa b      ii. 54ac zwx y x y    (b)  Diberi pengisytiharan-pengisytiharan berikut:    int a, b, c;   double d, e, f, g, x, y, z;   dan nilai-nilai terkini bagi setiap pembolehubah adalah seperti berikut:    a = -10,b = 5,c = 23,d=5.5,e=3.75,f=14.8, g=1.0;   x = 2.3, y = 8.5, z = 21.6;   Apakah output bagi setiap pernyataan berikut mengikut tertib yang    ditunjukkan?           cout << (a%(int)e - f );   cout << endl << (pow (d, c%abs(a++)));   cout << endl << (a/b + 1/c);   cout << endl << (g += 1.5 * 3 + ++g);        cout << endl << (z < y+x || z - 15 < x*y); [MAT181] - 4 - ...5/- (c)  Gabungkan empat pernyataan if berikut untuk menghasilkan hanya SATU  pernyataan if…else tersarang tanpa syarat-syarat kompaun (i.e. syarat-syarat  tanpa operator &&)       if ((ch == 'F') && (pay > 1000))    x + = 1;   if ((ch == 'F') && (pay <= 1000))    x + = 2;   if ((ch == 'M') && (pay > 1000))    x + = 3;   if ((ch == 'M') && (pay <= 1000))    x + = 5;   (d) Rujuk kepada segmen program berikut bagi bahagian (i), (ii) dan (iii).   : #define SIZE 100 void main() {   int V[SIZE];  void Read_in(...);  // Bagi soalan (1)(d)(i)  void Sort(...);  // Bagi soalan (1)(d)(ii)  void Repeating(...); // Bagi soalan (1)(d)(iii)   Read_in(...);  Sort(...);  Repeating(...); }  // definisi fungsi :  (i) Tulis definisi fungsi Read_in yang membaca 100 nilai kepada tatasusunan V[] dari satu fail teks bernama input.txt. Fail ini perlu diproses mengikut langkah-langkah pemprosesan fail lengkap; pengisytiharan fail, pembukaan fail, pengesahan fail, penutupan fail, dsb, perlu dibuat dalam fungsi ini. (ii) Tulis definisi fungsi Sort yang mengisih V[] mengikut algoritma isih buih dan mencetak nilai-nilai diisih itu pada skrin dalam tertib menurun. (iii) Tulis definisi fungsi Repeating yang menentukan sama ada terdapat nilai-nilai berulang dalam tatasusunan tersebut. Sekiranya  ada, fungsi ini perlu mengembalikan nilai 1. Sekiranya tiada, fungsi ini perlu mengembalikan nilai 0. Nilai ini perlulah dikembalikan melalui parameter rujukan. Pelaksanaan fungsi ini perlu dihentikan apabila nilai berulang pertama ditemui.   Question 2   Write a complete C++ program to compute the value     njmijip212  .       [MAT181] - 5 - ...6/- Note:  312ii = 12 + 22 + 32, while 62jj  = 2x3x4x5x6.    Let A =mii12  and B = njj2.  Your program must consist of the following functions: i)  void main() – to input the values of m and n and send them to the    respective functions.   ii) int Add(int m) – to receive the value of m from the  main() function and   compute the value of  A.  This value must be returned to main() via the    function name. iii) void Multiply(int n, int *B) – to receive the value of n from    main() and compute the value of B.  This value must be returned to main()   via a pointer. iv) void Add_Print(…)- to receive the values of A and B from main() and   add these numbers and prints the sum p with appropriate messages   Soalan 2  Tulis satu program C++ yang mengira nilai     njmijip212  .       Nota:  312ii = 12 + 22 + 32,  manakala 62jj  = 2x3x4x5x6.    Biarkan A =mii12 manakala B = njj2. Program anda perlu mengandungi fungsi-fungsi berikut: i)  void main() – untuk menginput nilai-nilai m dan n serta menghantar    mereka kepada fungsi-fungsi masing-masing.   ii) int Add(int m) – untuk menerima nilai m dari fungsi main() dan mengira   nilai A.  Nilai ini perlu dikembalikan kepada  main() melalui nama fungsi. iii) void Multiply(int n, int *B) – untuk menerima nilai n dari    main() dan mengira nilai B.  Nilai ini perlu dikembalikan kepada main()   melalui penuding. iv) void Add_Print(…)- untuk menerima nilai-nilai A dan B dari main()   dan jumlahkan mereka serta mencetak hasiltambah p dengan mesej yang   bersesuaian.   Question 3  (a) Consider the following declarations and assignment statements:       int num=100, iarray[6]={10,15,30,-10,-15,-30};   int *ptr_num, *ptr_i;   ptr_i = iarray + 2;   ptr_num = &num;  [MAT181] - 6 - ...7/-  Based on these statements, state whether the following expressions are TRUE, FALSE or ILLEGAL. Assume that the starting address of array iarray[] is   002AFE20, and the data of type int occupies 4 bytes of memory space.    (i) num == *ptr_num               (ii) num == &ptr_num            (iii) ptr_num == *num            (iv) ptr_i == &iarray[0]              (v) iarray[4] == ptr_i + 2           (vi) (ptr_i + 1)== 002AFE2C         (vii) &*ptr_i == 002AFE28          (viii) &ptr_num == &num             (ix)  *(iarray + 4) == *ptr_i + 2      (x) *(ptr_i + 1)== -10              (b) A record of 50 students consists of the following information:   matric number (6 digits)  name (maximum 20 characters)  gender (‘F’ or ‘M’)  CGPA (e.g. 2.0, 3.5, etc.)       marks (e.g. 34.4, 78.6, etc.)      Write a C++ declaration of an array of structure for the above record.     In addition, write a C++ program segment which initializes all the students’ marks  to 0.0.    (c) Consider a two dimensional array which is declared as follows:        int Matrix[5][6];   Write a nested for loop that will assign the elements in the array Matrix[][] in  the position as displayed in the following rows and columns:     0 5 10 15 20 25 1 6 11 16 21 26 2 7 12 17 22 27 3 8 13 18 23 28 4 9 14 19 24 29     (d) What will be printed by the following statement?          char char1[20] = "PRST";     char char2[10];   char char3[10] = "UVW";   double P = 765.88844;   double Q = 9.67457;   strcat_s(char1,char3);     strncpy_s(char2, char1, 6);      [MAT181] - 7 - ...8/-    cout << setiosflags(ios::left) <<       setiosflags(ios::fixed)<< setw(10)<<       setprecision(4) << setfill('*') << P <<  setw(10)    << char2 << resetiosflags(ios::left) << setw(12) << Q;  Soalan 3  (a) Pertimbangkan pernyataan-pernyataan pengisytiharan dan umpukan berikut:       int num=100, iarray[6]={10,15,30,-10,-15,-30};   int *ptr_num, *ptr_i;   ptr_i = iarray + 2;   ptr_num = &num;     Berdasarkan pernyataan-pernyataan ini, nyatakan sama ada ungkapan-ungkapan  berikut adalah BENAR, SALAH atau TIDAK SAH. Anggapkan alamat mula bagi  tatasusunan iarray[] adalah 002AFE20, dan data berjenis int mengisi 4 bait  ruang ingatan.   (i) num == *ptr_num               (ii) num == &ptr_num            (iii) ptr_num == *num            (iv) ptr_i == &iarray[0]              (v) iarray[4] == ptr_i + 2           (vi) (ptr_i + 1)== 002AFE2C         (vii) &*ptr_i == 002AFE28          (viii) &ptr_num == &num             (ix)  *(iarray + 4) == *ptr_i + 2      (x) *(ptr_i + 1)== -10              (b) Satu rekod 50 orang pelajar mengandungi maklumat berikut:    - nombor matrik (6 digit)   - nama (maksimum 20 aksara)   - jantina (‘F’ atau ‘M’)   - PNGK (e.g. 2.0, 3.5, dsb.)   - markah (e.g. 34.4, 78.6, dsb.)   Tulis satu pengisytiharan C++ untuk satu tatasusunan struktur bagi rekod di atas.       Secara tambahan, tulis satu segmen program C++ yang menilai awalkan    semua markah pelajar kepada 0.0.   (c) Pertimbangkan tatasusunan dua dimensi yang diisytiharkan seperti berikut:        int Matrix[5][6];   [MAT181] - 8 - ...9/-  Tulis satu gelung for tersarang yang akan mengumpukkan elemen-elemen   dalam tatasusunan Matrix[][] pada posisi seperti yang paparkan dalam baris  dan lajur berikut:     0 5 10 15 20 25 1 6 11 16 21 26 2 7 12 17 22 27 3 8 13 18 23 28 4 9 14 19 24 29   (d) Apakah yang akan dicetak oleh segmen berikut?          char char1[20] = "PRST";     char char2[10];   char char3[10] = "UVW";   double P = 765.88844;   double Q = 9.67457;   strcat_s(char1,char3);     strncpy_s(char2, char1, 6);         cout << setiosflags(ios::left) <<       setiosflags(ios::fixed)<< setw(10)<<       setprecision(4) << setfill('*') << P << setw(10)    << char2 << resetiosflags(ios::left) << setw(12) << Q;  Question 4  Write a C++ program to enter any positive integer and check whether the number is a Strong number or not. A Strong number is a number whose sum of factorial of digits is equal to the original number.  For example, 145 is a Strong number since   1! + 4! + 5! = 145   Examples of Strong numbers: 1, 2, 145, 40585   Soalan 4  Tulis satu program C++ untuk memasukkan sebarang integer positif dan semak sama ada nombor tersebut satu nombor Strong atau tidak. Nombor Strong ialah nombor yang hasiltambah tertisi digitnya bersamaan dengan nombor yang asal.  Contohnya,  145 ialah nombor Strong kerana   1! + 4! + 5! = 145   Contoh nombor-nombor Strong: 1, 2, 145, 40585       (100 marks)                                                                                                                            (100 markah) - ooo 0 ooo -  

MAT181 – Programming For Scientific Applications

[Pengaturcaraan Untuk Penggunaan Sains] Jun 2017

http://eprints.usm.my/39692/1/MAT181%2DNHMA.pdf

MAT181 – Programming For Scientific Applications [Pengaturcaraan Untuk Penggunaan Sains] Jun 2017

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