Solution to the program design of the sequence structure of one book (Chapter 1)

1. Exchange value

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=2064

Code ：

#include<iostream>
using namespace std;
int a,b,c;// Defining variables  
int main()
{ 
	cin>>a>>b;
	c=a;
	a=b;  
	b=c;// In exchange for  
	cout<<a<<" "<<b;
	return 0;
}

2. Sum of integers

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=2065

  Code ：

#include<iostream>
using namespace std;
int a,b,c;// Defining variables  
int main()
{ 
	cin>>a>>b>>c;// Input  
	cout<<a+b+c<<endl;// Output  
	return 0;
}

3. Buy books

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=2066

  Code ：

#include<iostream>
using namespace std;
double n,m;// Defining variables  
int main()
{
	cin>>n>>m;// Input 
	m=m*0.8;
	n=n-m;// Calculation  
	printf("%.2lf",n);//printf Two decimal places can be reserved  
	return 0;
}

4.A+B problem

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=1006

Code ：

#include<iostream>
using namespace std;
int n,m;// Defining variables  
int main()
{
	cin>>n>>m;// Input 
	cout<<n+m<<endl;// Output 
	return 0;
}

 5. Calculation （a+b）*c Value

Original link

Code ：

#include<iostream>
using namespace std;
int a,b,c,d;
int main()
{
	cin>>a>>b>>c;// Input 
	d=a+b;
	d=c*d;// Calculation 
	cout<<d<<endl;
	return 0;
}

  6. Calculation （a+b）/c Value

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=1008

Code ：

#include<iostream>
using namespace std;
int a,b,c;
int main()
{
	cin>>a>>b>>c;// Input 
	cout<<(a+b)/c<<endl;// Calculation 、 Output 
	return 0;
}

7. Division with remainder

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=1009

Code ：

#include<iostream>
using namespace std;
int a,b;
int main()
{
	cin>>a>>b;// Input  
	cout<<a/b<<" "<<a%b<<endl;// Calculation 、 Output  
	return 0;
}

 8. Calculate the floating-point value of a fraction

Original link http://ybt.ssoier.cn:8088/problem_show.php?pid=1010

Code ：

#include<iostream>
using namespace std;
int a,b;// Definition  
int main()
{
	cin>>a>>b;
	printf("%.9lf",a*1.0/b); // Retain 9 Decimal place  
	return 0;
}

  Novice , Your advice are most welcome