Arithmetic 2--c++

1. Design ideas:

The previous article has been written, not in explanation .....

2. Source code:

#include <iostream.h>
#include <stdlib.h>
#include "time.h"
int main ()
{
int a,b,c,f,j,i,t,num,l,jj,cc,fw;//i,j,t is a count variable, and a, B is the operand.
cout<< "-----------------arithmetic----------------------" <<endl;
cout<<endl;
Srand ((unsigned) time (NULL));//The random number seed is the current computer.
cout<< "************* please fill in the title request: ********************" <<endl;
cout<< "* *" <<endl;
cout<< "* 1. Please enter the number of questions to generate NUM: *" <<endl;//Select the number of topics.
cout<< "* 2. Please enter how to print (Number of columns L, line spacing JJ): *" <<endl;//choose how to print.
cout<< "* 3. Please select if there is no multiplication cc (1 for or 0 for none): *" <<endl;//there is no multiplication method.
cout<< "* 4. Please select the range of the number of FW (FW refers to the largest number in the range): *" <<endl;//the range of the selected number.
cout<< "* 5. Please select the division has an all-in-one number C (1 for have or 0 for none): *" <<endl;//Select Division has no number. "
cout<< "* 6. Please select Plus or minus negative F (1 for either or 0 for none): *" <<endl;//Select Plus or minus with or without negative numbers. "
cout<< "* *" <<endl;
cout<< "*************************************************" <<endl;
cout<< "Please enter number of questions to generate num:" <<endl;
cin>>num;
if (num<0)
{
cout<< "Wrong! Kiss! The number of topics can not be less than 0, please re-lose: ";
cin>>num;
}
cout<< "Please enter printing method (number of columns L):" <<endl;
cin>>l;
if (l<=0)
{
cout<< "Wrong! Kiss! The number of columns cannot be less than or equal to 0, please re-lose: ";
cin>>l;
}
cout<< "Please enter the printing method (line spacing JJ):" <<endl;
cin>>jj;
if (jj<=0)
{
cout<< "Wrong! Kiss! The line spacing cannot be less than or equal to 0, please re-lose: ";
cin>>jj;
}
cout<< "Please select if there is no multiplication cc (1 for either or 0 for none):" <<endl;
cin>>cc;
if (cc!=0&&cc!=1)
{
cout<< "Wrong! Kiss! Please re-lose: ";
cin>>cc;
}
cout<< "Please select the range of the number of FW (FW refers to the largest number in the range):" <<endl;
cin>>fw;
cout<< "Please select the division has an all-in-one number C (1 stands for or 0 for none):" <<endl;
cin>>c;
if (c!=0&&c!=1)
{
cout<< "Wrong! Kiss! Please re-lose: ";
cin>>c;
}
cout<< "Please select plus or minus negative F (1 for either or 0 for none):" <<endl;
cin>>f;
if (f!=0&&f!=1)
{
cout<< "Wrong! Kiss! Please re-lose: ";
cin>>f;
}
cout<<endl;
if (cc==1)
cc=cc+3;
Else
cc=cc+2;
for (j=0;j<num;j++)
{
Generates a random number.
A=rand ()%FW;
B=rand ()%fw+1;//guarantees that the divisor is not 0.
I=rand ()%cc;
Switch (i)
{
Case 0:
cout<<a<< "+" <<b<< "=" << "";
Break
Case 1:
if (f==0&&a<=b)
cout<<b<< "-" <<a<< "=" << "";
Else
cout<<a<< "-" <<b<< "=" << "";
Break
Case 2:
cout<<a<< "*" <<b<< "=" << "";
Break
Case 3:
if (a%b!=0&&c==0)
cout<<a-a%b<< "/" <<b<< "=" << "";
Else
cout<<a<< "/" <<b<< "=" << "";
Break
}
if (J%L==L-1)
{
for (t=0;t<jj;t++)
cout<<endl;
}
}
cout<<endl;
return 0;
}

3. Operation Result:

4, PSP0 level record table

Summary of weekly activity records

Name: Donglongyan Date:2015.3.14

Date / task	Lectures	Programming	Read	Prepare for the exam			Total Day
Sunday
Monday
Tuesday		20
Wednesday
Thursday		75
Friday		30
Saturday		100
Week Summary		225

Stage time and Efficiency week (week of last week activity Table +1): 1

Cumulative time excluding last week

Total
Average
Biggest
Minimum

Cumulative time of previous weeks

Time Record table:

Student: Donglongyan Date:2015.3.14

Teacher: Wang Course:PSP

Date	Start time	End time	Interrupt Time	NET time	Activities	Note
3.10	9:30	9:50	0	20	Classroom Exercises
3.12	16:05	19:20	60	75	Arithmetic	Eat for an hour
3.13	9;20	9:50	0	30	Classroom Exercises
3.14	18:23	20:03	0	100	Arithmetic

Bug log:

Student: Donglongyan

Date:2015.3.14

Teacher: Chien Wang

Programmers:

Date	Number	Type	Introduction phase	Exclusion phase	Repair time	Fixing defects
3.10	1		Write code	Compile	2min
3.12	2		Write code	Perform	30min	Logic error

5. Summary: Less writing procedures, logic error is not easy to solve, from the middle school to the method is to implement a small function to test.

Variable definition, the structure is not clear, at that time clear, after a while forget, feel a bit of comments to remember a good!!!!

Arithmetic 2--c++