Implement a command-line program that automatically generates arithmetic topics for primary schools

GitHub Project Address: Https://github.com/sumilekaedei/Myapp.git

Title: Implement a command-line program that automatically generates arithmetic topics for primary schools.

Natural number: 0, 1, 2, ....

• True score: 1/2, 1/3, 2/3, 1/4, 1 ' 1/2, ....
• Operator: +,?, X,÷.
• Parentheses: (,).
• equals sign: =.
• Separators: spaces (for arithmetic characters and before and after).
• An arithmetic expression:

E = n | E1 + E2 | E1? E2 | E1xe2 | E1÷e2 | (e),

where E, E1 and E2 are expressions, n is the natural number or the true fraction.

• Arithmetic title: E =, where e is an arithmetic expression.

Effectiveness Analysis: The formulas for 1, 2, and 3 operators are discussed, the possible cases are listed, and the situation which is not mentioned in it is improved.

Design implementation process: one of the main functions and five sub-functions, sub-functions will also call each other. In the main function, the function that generates the problem is called, and then the problem function calls the random function and generates the answer function, and the function that generates the answer also calls the function that generates the question function and the division of the divide.

Code Description:

#include <stdio.h>#include<time.h>#include<stdlib.h>#include<string.h>CharGetsignal ()//operatorintRandomintA//Random numberintgcdintXintY//Euclidean MethodintAnswersintYintNumintNUM1,intNUM2,intNUM3,intNUM4,CharSignal1,CharSignal2,CharSignal3,intR//Generate AnswersintQuestionintYintR//Generate Topics{FILE*FP;//Srand ((unsigned) time (0));    int Get; intnum,num1,num2,num3,num4; CharSignal1,signal2,signal3; Signal1=getsignal (); Signal2=getsignal (); Signal3=getsignal (); NUM1=random (R); Num2=random (R); NUM3=random (R); NUM4=random (R); Num=rand ()%3+1; if(num==1) {answers (y,num,num1,num2,num3,num4,signal1,signal2,signal3,r); FP=fopen ("Exercises.txt","a"); fprintf (FP,"topic%d:%d%c%d = \ n", y,num1,signal1,num2);    Fclose (FP); }    if(num==2) {answers (y,num,num1,num2,num3,num4,signal1,signal2,signal3,r); FP=fopen ("Exercises.txt","a"); fprintf (FP,"topic%d:%d%c%d%c%d = \ n", Y,NUM1,SIGNAL1,NUM2,SIGNAL2,NUM3);        Fclose (FP); }    if(num==3) {answers (y,num,num1,num2,num3,num4,signal1,signal2,signal3,r); FP=fopen ("Exercises.txt","a"); fprintf (FP,"topic%d:%d%c%d%c%d%c%d = \ n", Y,NUM1,SIGNAL1,NUM2,SIGNAL2,NUM3,SIGNAL3,NUM4);    Fclose (FP); }    return 0;} intMain () {srand (unsigned) time (0)); FILE*FP; FP=fopen ("Exercises.txt","W");    Fclose (FP); FP=fopen ("Answers.txt","W"); Fclose (FP);intN,r;inty=1;Charargv1[3];Charargv2[3];    //n=10,r=10;scanf"%s", ARGV1);//- Nscanf"%d",&N); scanf ("%s", ARGV2);//- Rscanf"%d",&R);if(!STRCMP (ARGV1,"- N") &&!strcmp (Argv2,"- R"))    { while(n>0) {question (y,r); Y++; N--; }    }Elseprintf"input Error! ");return 0;}

Test run:

PSP2.1 form:

PSP2.1	Personal Software Process Stages	Estimated time-consuming (minutes)	Actual time elapsed (minutes)
Planning	Plan
· Estimate	· Estimate how long this task will take	720	2160
Development	Development
· Analysis	· Demand analysis (including learning new technologies)	240	720
· Design Spec	· Creating a design Document	60	80
· Design Review	· Design Review (and colleagues review design documents)	120	150
· Coding Standard	· Code specification (to develop appropriate specifications for current development)	90	90
· Design	· Specific design	120	150
· Coding	· Specific code	600	1440
· Code Review	· Code review	120	300
· Test	· Test (self-test, modify code, commit changes)	240	240
Reporting	Report
· Test Report	· Test report	30	30
· Size Measurement	· Computational effort	15	20
· Postmortem & Process Improvement Plan	· Summarize afterwards and propose process improvement plan	30	30
Total		1665	3330

Project Summary: This project, began to see the topic thought is very simple, but to the actual time, because the demand is more, do it very difficult, and many of them have not learned the practice. And this program does not do very well, although barely able to achieve basic functions, but the parentheses, the title of the true score and other functions can not be achieved, and there are many bugs have not been effectively resolved.

Implement a command-line program that automatically generates arithmetic topics for primary schools