1 #include "../../st.h" 2  3 int main() 4 { 5     vector<double> nums; 6     double t; 7     int n; 8     cout<<"input how many nums: "; 9     cin>>n;10     cin>>t;11     nums.push_back(t);12     int i=0;13     while(cin>>t)14     {15         if(i<n-1&&nums[i]!=t)16         {17             nums.push_back(t);18             i++;19         }20     }21     double sum=0;22     for(i=0;i<nums.size();i++)23     {24         cout<<nums[i]<<"  ";25         sum+=nums[i];26     }27     cout<<endl<<"the count is "<<sum<<endl;28     keep_window_open();29     return 0;30 }

 1 #include "../../st.h" 2  3 //maybe can be better 4 //利用  narrow_cast<> 5 //这个版本没有 6  7 int main() 8 try 9 {10     int x1=0,x2=1,x=x1+x2;11     bool b=1;12     cout<<x1<<endl<<x2<<endl<<x<<endl;13     while(x>=0)14     {15         cout<<x<<endl;16         x=x1+x2;17         18         x1=x2;19         x2=x;20     }21     keep_window_open();22     return 0;23 }24 25 catch(runtime_error)26 {27     cout<<"it is over."<<endl;28     keep_window_open();29     return 1;30 }

 1 #include "../../st.h" 2  3 //利用两个数组储存 4  5 int main() 6 { 7     int a=1224;         //设定初始数 8     int b;                //我们猜测的数 9     int n,m;10     int i,j,t;11     int aa[4];     //存原始数的每个数字12     int bb[4];       //我们猜测的数的每个数字13     for(i=3;i>=0;i--)14     {15         aa[i]=a%10;16         a/=10;17     }18     while(1)19     {20         cin>>b;21         n=m=0;22         for(i=3;i>=0;i--)23         {24             bb[i]=b%10;25             b/=10;26         }27 28         for(i=0;i<4;i++)29             if(aa[i]==bb[i])30                 n++;31         if(n==4)32         {33             cout<<"4 gong"<<endl;34             break;35         }36         for(i=0;i<4;i++)37             for(j=0;j<3-i;j++)38                 if(bb[j]>bb[j+1])39                 {40                     t=bb[j];41                     bb[j]=bb[j+1];42                     bb[j+1]=t;43                 }44         for(i=0;i<4;i++)45         {46             for(j=0;j<4;j++)47                 if(aa[i]==bb[j]){48                     m++;49                     break;50                 }51         }52         cout<<m<<endl;53         m-=n;54         cout<<n<<" gong,"<<m<<" mu"<<endl;55     }56     return 0;57 }

 1 //为第六章习题8  但4个数字改为4个字母 2 #include "../../st.h" 3  4 int main() 5 { 6     char a[4]={‘a‘,‘b‘,‘b‘,‘c‘}; 7     char b; 8     int n,m; 9     int i,j,t;10     int aa[4],bb[4];11     for(i=0;i<4;i++)12         {13             aa[i]=a[i];14         }15     while(1)16     {17         18         n=m=0;19         for(i=0;i<4;i++)20         {21             cin>>b;22             bb[i]=b;23         }24 25 26         for(i=0;i<4;i++)27             if(aa[i]==bb[i])28                 n++;29         if(n==4)30         {31             cout<<"4 gong"<<endl;32             break;33         }34         for(i=0;i<4;i++)35             for(j=0;j<3-i;j++)36                 if(bb[j]>bb[j+1])37                 {38                     t=bb[j];39                     bb[j]=bb[j+1];40                     bb[j+1]=t;41                 }42         for(i=0;i<4;i++)43         {44             for(j=0;j<4;j++)45                 if(aa[i]==bb[j]){46                     m++;47                     break;48                 }49         }50         m-=n;51         cout<<n<<" gong,"<<m<<" mu"<<endl;52     }53 54     while(1);55     return 0;56 }