輸入兩值做加總，詢問是否繼續(y/n)
#include <iostream>
using namespace std;
int main()
{
int a,b,sum;
char ans;
do
{
cout<<"Input a,b:";
cin>>a>>b;
cout<<a<<"+"<<b<<"="<<sum<<endl;
cout<<"continue?(y/n)";
cin>>ans;
}while(ans=='y' ||ans=='Y');
cout<<"謝謝使用"<<endl;
system("pause");
return 0;
}
--------------------------------------------------------------------------------------------------------------
輸入數值(1~6)
若錯誤列印訊息，並在輸入一次
#include <iostream>
using namespace std;
int main()
{
int n;
do
{
cout<<"Input n(1~6):";
cin>>n;
if(n<1 || n>6)
cout<<"輸入錯誤"<<endl;
} while(n<1 || n>6);
cout<<"你輸入的是:"<<n<<endl;
system("pause");
return 0;
}
-------------------------------------------------------------------------------------
巢狀迴圈
****
****
****
****
****
****
#include <iostream>
using namespace std;
int main()
{
int i,j;
for(i=1;i<=6;i++)
{
for(j=1;j<=4;j++)
{
cout<<"*";
}
cout<<endl;
}
system("pause");
return 0;
}
----------------------------------------------------------------------------------------------
12345
12345
12345
12345
#include <iostream>
using namespace std;
int main()
{
int i,j,k;
for(i=1;i<=7;i++)
{
for(j=1;j<=i-1;j++)
{
cout<<" ";
}
for(k=1;k<=5;k++)
{
cout<<k;
}
cout<<endl;
}
system("pause");
return 0;
}
--------------------------------------------------------------------------------------------------------------------
continue and break
#include <iostream>
using namespace std;
int main()
{
int n;
do{
cout<<"input n(1~6):";
cin>>n;
if(n<1 || n>6)
{ cout<<"輸入錯誤,再輸入一次"<<endl;;
continue;
}
else
break;
}while(1); //無限迴圈
cout<<"你輸入的是:"<<n<<endl;
system("pause");
return 0;
}
----------------------------------------------------------------------------------------------------------
輸入6值找出最大值
#include <iostream>
using namespace std;
int main()
{
int i,max=0;
int a[6];
for(i=0;i<6;i++)
{
cout<<"a["<<i<<"]=";
cin>>a[i];
if(a[i]>max)
{
max=a[i];
}
}
cout<<"max="<<max<<endl;
system("pause");
return 0;
}
--------------------------------------------------------------------------------------------------------
已知資料，做處理
#include <iostream>
using namespace std;
int main()
{
int h[]={175,158,168,180};
int w[]={85,60,45,83};
double BMI[4];
int i;
double t;
for(i=0;i<4;i++)
{
t=h[i]/100.0;
BMI[i]=w[i]/(t*t);
cout<<BMI[i]<<endl;
}
system("pause");
return 0;
}
------------------------------------------------------------------------------------------------------
#include <iostream>
using namespace std;
int main()
{
int y,m;
int days[]={0,31,28,31,30,31,30,31,31,30,31,30,31};
cout<<"year:";
cin>>y;
cout<<"month:";
cin>>m;
if(y%4==0&&y%100!=0||y%400==0)
days[2]=29;
cout<<"有"<<days[m]<<"天"<<endl;
system("pause");
return 0;
}
--------------------------------------------------------------------------------------------------------------------
高公局今天將先公告國道計程收費方案，前20公里免費
小客車、小貨車每公里一．二元、兩百公里以上○．九元，
大貨車每公里一．五元、兩百公里以上一．一二元，
大客車及聯結車每公里一．八元、兩百公里以上一．三五元。
1.2,1.5,1.8
0.9,1.12,1.35
小客車、小貨車每公里一．二元、兩百公里以上○．九元，
大貨車每公里一．五元、兩百公里以上一．一二元，
大客車及聯結車每公里一．八元、兩百公里以上一．三五元。
1.2,1.5,1.8
0.9,1.12,1.35
#include <iostream>
using namespace std;
int main()
{
double cost[]={1.2,1.5,1.8};
double discount[]={0.9,1.12,1.35};
int km,item;
double tal=0;
cout<<"1.小客車,小貨車"<<endl;
cout<<"2.大貨車"<<endl;
cout<<"3.大客車,聯結車"<<endl;
cout<<"請選擇:";
cin>>item;
cout<<"公里數:";
cin>>km;
if(km>20)
{
km-=20;
if(km<200)
tal=km*cost[item-1];
else
tal=200*cost[item-1]+(km-200)*discount[item-1];
cout<<"國道費用:"<<tal<<endl;
}
else
cout<<" 20公里以下免費"<<endl;
system("pause");
return 0;
}
