Arithmetic Design 03

Topic Requirements

1 The program that the student writes must be able to determine whether the user's input answers are correct

2 The program must be able to handle arithmetic mixed formulas

1 Design ideas:

Generate random numbers and number of numbers generated in the topic

Determine if the condition is met by the IF

Use the For loop to achieve the number of calculations required to produce

In the concrete implementation process, by comparing the user answer and the program to run the answer to determine the right and wrong answer

2 Source program code:

#include <iostream>#include <ctime>#include <cstdlib>using namespaceStd;voidMain () {intPronum; IntFanwei; IntFushu; IntYushu; IntChengchu; IntKuohao; cout<< "Please enter the number of questions you want (please enter an integer)" <<Endl Cin>>Pronum; cout<< "Please enter the minimum value range (0~100)" <<Endl Cin>>Fanwei; cout<< "Please select whether there is a negative number Select 1 indicates that there is a choice 0 means no (Please select 1 or 0 as required)" <<Endl Cin>>Fushu; cout<< "Please select whether the number of 3 indicates that there is a choice 4 means no (please select 3 or 4 as required)" <<Endl Cin>>Yushu; cout<< "Please select whether there is multiplication 5 indicates that there is a choice 6 means no (Please select 5 or 6 as required)" <<Endl Cin>>Chengchu; cout<< "Please select if there is a bracket of 7 indicating that there is a choice 8 means no (Please select 7 or 8 as required)" <<Endl Cin>>Kuohao; int num[10]; IntMyanswer,answer; int rinum=0; int fanum=0; int zff=0, fhnum=0; Char fs[20]; Char fuhao[20]; IntWeizhi1; IntWeizhi2; Srand (Time (0)); for (int i=0;i<pronum;i++) {int Shuzinum=rand ()%4+2; for (int j=0;j<=shuzinum;j++) {Num[j]=rand ()%100+1; For(;;) {if (num[j]<Fanwei) Num[j]=rand ()%100+1; else break; } if (fushu==1) {Zff=rand ()%2; if (zff==0) fs[j]= '-'; if (fs[j]== '-') num[j]=num[j]* (-1); if (zff==1) fs[j]= ' + '; } if (fushu==0) {fs[j]= ' + '; }} for (int ii=0;ii<shuzinum;ii++) {if (chengchu==5) {Fhnum=rand ()%4; if (fhnum==0) fuhao[ii]= ' + '; if (fhnum==1) fuhao[ii]= '-'; if (fhnum==2) fuhao[ii]= ' * '; if (fhnum==3) {fuhao[ii]= '/'; if (yushu==3) {weizhi1=ii For(;;) {if (num[ii]%num[ii+1]!=0) Break; Else{Num[ii]=rand ()%100+1; Num[ii+1]=rand ()%100+1; }}} if (yushu==4) {weizhi1=ii For(;;) {if (num[ii]%num[ii+1]!=0) {Num[ii]=rand ()%100+1; Num[ii+1]=rand ()%100+1; } else break; }}} if (chengchu==6) {Fhnum=rand ()%2; if (fhnum==0) fuhao[ii]= ' + '; if (fhnum==1) fuhao[ii]= '-'; }} cout<<i+1<< ":" <<num[0]; if (shuzinum==2) kuohao=8; if (kuohao==7) {weizhi2 =rand ()% (shuzinum-2) +1; for (int i=0;i<weizhi2-1;i++) {cout<<fuhao[i]<<num[i+1]; } cout<<fuhao[weizhi2-1]<< "(" <<num[weizhi2]<<fuhao[weizhi2]<<num[weizhi2 +1]< < ")"; for (int i=weizhi2 +1;i<shuzinum;i++) {cout<<fuhao[i]<<num[i+1]; } answer=num[0]; if (fuhao[weizhi2]== ' + ')) {Num[weizhi2]=num[weizhi2]+num[weizhi2 +1]; Num[weizhi2 +1]=0; } if (fuhao[weizhi2]== '-') {num[weizhi2]=num[weizhi2]-num[weizhi2+1]; Num[weizhi2+1]=0; } if (fuhao[weizhi2]== ' * ') {num[weizhi2]=num[weizhi2]*NUM[WEIZHI2]; Num[weizhi2+1]=1; } if (fuhao[weizhi2]== '/') {num[weizhi2]=num[weizhi2]/num[weizhi2+1]; Num[weizhi2+1]=1; } for (int i=0;i<shuzinum;i++{if (fuhao[i]== ' * ')) {num[i]=num[i]*num[i+1]; Num[i+1]=1; } if (fuhao[i]== '/') {num[i]=num[i]/num[i+1]; Num[i+1]=1; }} for (int i=0;i<shuzinum;i++) {if (fuhao[i]== ' + ')) answer=answer+num[i+1]; if (fuhao[i]== '-') answer=answer-num[i+1]; if (fuhao[i]== ' * ') answer=answer*num[i+1]; if (fuhao[i]== '/') answer=answer/num[i+1]; }} if (kuohao==8) {for (int i=1;i<shuzinum;i++) {cout<<fuhao[i]<<num[i+1]; } answer=num[0]; for (int i=0;i<shuzinum;i++) {if (fuhao[i]== ' * ' ) {num[i]=num[i]*num[i+1 ]; num[i+1]=1 ;} if (fuhao[i]== '/' ) {num[i]= Num[i]/num[i+1 ]; num[i+1]=1 ;}} for (int i=0;i<shuzinum;i++ ) {if (fuhao[i]== ' + ' ) answer= Answer+num[i+1 ]; if (fuhao[i]== '-' ) answer=answer-num[i+1 ]; if (fuhao[i]== ' * ' ) answer=answer * Num[i+1 ]; if (fuhao[i]== '/' ) answer=answer/num[i+1 ];}} cout<< "=" <<  Endl; cout << "Please enter your calculation results" <<  Endl; cin>>  myanswer; if (answer-myanswer<0.00001 ) {rinum++  cout<< "Congratulations on your <<  Endl;} else  {fanum++ ; cout<<" I'm sorry Wrong "<<  Endl ; }} cout<< "was right:" <<RiNum<< "<<" was wrong: "<<FaNum<<" <<  Endl;} 
 3 Run Results 
 
 
                

4 Experiment Summary: Through this experiment, I understand the importance of companion. Two a person's mind collision is indeed much better than a man's thoughts. This cooperation reminds me of the importance of the group, which makes me understand the key to cooperation.

Time log:

Study Chen Chen Date: 3/26

Teacher: Wang Course: Introduction to Software engineering

Date	Start time	End time	Middle Time (minutes)	NET time Minutes	Activities	Note
3/21	8:00	9:50	10	100	Class	Break at recess
3/22
	19:00	22:00		120	Write a program
3/23
	21:30	22:20	0	50	Write a program
3/24	20:00	22:15		75	Writing Programs
3/25	19:30	22:30	0	30	Writing procedures and surfing the web for information learning
3/26	10:30	5:36	0	157	Write procedures, check information

Work Photo:

Arithmetic Design 03