EE308 LAB5

Question

The Link Your Class	https://bbs.csdn.net/forums/MUEE308FZ?category=0
The Link of Requirement of This Assignment	https://bbs.csdn.net/topics/601188617
MU STU ID and FZU STU ID	19105932 & 831902104
Teammate1's MU STU ID and FZU STU ID	19105576 & 831902202
Teammate2's MU STU ID and FZU STU ID	19105592 & 831902115
Teammate3's MU STU ID and FZU STU ID	19104031 & 831902114
Teammate4's MU STU ID and FZU STU ID	19103158 & 831902116
GitHub link	https://github.com/1252845841hhAs/Lab05-Snowed-in-Taipei-

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PSP Form

PSP	Personal Software Process Stage	Estimated Time (minutes)	Actual Time (minutes)
Planning	Make a plan	10	10
Estimate	Estimate how long the task will take	160	175
Development	The development of	7	8
Analysis	Requirements analysis (including learning new technology)	12	14
Design Spec	Generate design documents	6	6
Design Review	Design review	3	4
Coding Standard	Code specifications (develop appropriate specifications for current development)	3	3
Design	Specific design	40	42
Coding	Specific coding	120	130
Code Review	Code review	7	8
Test	Test (self-test, modify code, commit changes)	10	20
Reporting	Report	10	10
Test	Test report	-	-
Postmortem&Process Improvement	Summarize afterwards and propose process improvement plan	6	7
Summary	-	160	175

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Learning Progress Bar

hours	new code(line)	Cumulative code (line)	Important growth
0.5	0	0	Analyze the experimental project, establish the general framework, the team leader to the division of labor
1	150	150	Use if, switch, and for statements
0.5	20	20	How to generate random numbers
0.5	10	10	How to keep two decimal places
1	0	0	Program result testing and modification & Blog Writing

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The Division Of Responsibilities Of Team Members

Team Members	MU ID	The Division Of Responsibilities
Yue Zhuo	19105592	Grade 1 to grade 2: addition and subtraction of integers within 100 and github
Jinhan Lin	19103158	Grade 1 to grade 2: addition and subtraction of integers within 100 and github
Chuan He	19104031	Grades 3 to 4: addition, subtraction, multiplication and division of integers and CSDN
Yanqi Fan	19105932	Grades 3 to 4: addition, subtraction, multiplication and division of integers and CSDN
Yaxing Li	19105576	Grades 5 to 6: addition, subtraction, multiplication and division including decimals

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Program Running Environment

C++

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Screenshot of the Software Running

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Event

Firstly, in the design process, we found that multiple layers of identification input and different operations are required this time, which is different from the single or single-layer input and judgment we faced before.

Secondly, since the use of random numbers is involved, we are not familiar with the call of such functions. Therefore, we have fully understood the use of Rand functions through consulting materials. At the same time, we note that random numbers can also help us generate random operators. Since Grades 3-6 need to calculate multiplication and division, we use if statements to represent "+" "-" "*" "/" by generating four numbers: 0, 1, 2 and 3. After running the program, we found that there are some small mathematical problems in the program. For example, negative numbers and divisor 0 may occur during subtraction. We also realized through the code that there will be no questions with negative answers and divisor 0.

#include <time.h>
srand(time(NULL));
int a=rand()%100;
int b=rand()%100;

Thirdly, when generating decimals, sometimes the answer is infinite decimals, and the result we need is to retain two decimal places. After the brainstorming of team members, we use the following methods to realize the operation of retaining two decimal places. We first add 0.005 to the obtained data, and this step realizes the rounding of the two decimal places after the decimal point, Then multiply the number by 100 to get an integer of type int, and then divide by 100 to get a floating-point number in the form of float, that is, the answer we need.

double a=(double)(rand())/1000;
double b=(double)(rand())/1000;
a = ((float)((int)((a+0.005)*100))/100);
b = ((float)((int)((b+0.005)*100))/100);

Finally, in order to accomplish the main function, we use the random numbers and get the results. Then, we compare the result to the answer that typed in. We divided the whole score, which is 100, by the number of questions. If the answer is true, we add the score. If wrong, we lose the score. At the end, we calculate the scores we gain, and show it on the screen.

for(size; size>0; size--) {
        int type=rand()%2;
        if(type==0) {
            int a=rand()%100;
            int b=rand()%100;
            int result;
            result=a+b;
            cout<<a;
            cout<<"+";
            cout<<b;
            cout<<"=";
            int student;
            cin>>student;
            if(student==result) {
                source=source+source1;
                i++;
            }
        }

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Team Programming Experience

Answer 1

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