1 #include<iostream>
2 using namespace std;
3 void main()
4 {
5 int M,N,p,q,temp=1;
6 char i,j;
7 while(temp) //控制程序是否要执行
8 {
9 cout<<"请输入你的选择temp:\n";
10 cout<<"您输入0时:不再运行程序，直接退出程序。\n";
11 cout<<"您输入1时:运行程序即输出二元关系矩阵。\n";
12 cin>>temp;
13 switch(temp)
14 {
15 case 0: temp=0;break;
16 case 1:
17 cout<<"请输入两个数组的大小M,N："<<endl;
18 cin>>M>>N;
19 char *arr1=new char[M];
20 char *arr2=new char[N];
21 cout<<"请输入第一个集合arr1："<<endl;
22 for(p=0;p<M;p++)
23 {
24 cin>>arr1[p];
25 }
26 cout<<"请输入第二个集合arr2："<<endl;
27 for(p=0;p<N;p++)
28 {
29 cin>>arr2[p];
30 }
31 int** arr=new int*[M];//开辟一个动态二维数组，高M，宽N
32 for(int K=0;K<M;K++)
33 {
34 arr[K]=new int[N];
35 }
36 for(q=0;q<M;q++)//数组初始化全为0
37 {
38 for( p=0;p<N;p++)
39 {
40 arr[q][p]=0;
41 }
42 }
43 cout<<"请输入二元关系以0结束"<<endl; //输入关系后，以输入0代表结束
44 while(1)
45 {
46 cin>>i;
47 if(i=='0')
48 break;
49 else
50 {
51 cin>>j;
52 if(i>='a'&&i<='z'&&(j<'a'||j>'z'))
53 {
54 i=i-'0';//0的ascii码为48，a的ascii码是65，z的ascii码90
55 arr[(i-'0')-1][(j-'0')-1]=1;
56 }
57 if(j>='a'&&j<='z'&&(i<'a'||i>'z'))
58 {
59 j=j-'0';
60 arr[(i-'0')-1][(j-'0')-1]=1;
61 }
62 else if(i>='a'&&i<='z'&&j>='a'&&j<='z')
63 {
64 p=i-'0'-'0';
65 q=j-'0'-'0';
66 arr[p-1][q-1]=1;
67 }
68 else
69 arr[(i-'0')-1][(j-'0')-1]=1;
70 }
71 }
72 cout<<"该二元关系的矩阵为："<<endl;
73 for(q=0;q<M;q++)
74 {
75 for(p=0;p<N;p++)
76 {
77 cout<<arr[q][p]<<" ";
78 }
79 cout<<endl;
80 }break;
81 }
82 }
83 }
#include<iostream>
using namespace std;
void output(int i,int j,int **a);
void choose(int **arr);
void main()
{
int M,N;
//int M=0,N=0;
//int *array1=new int[M];
//int *array2=new int[N];
cout<<"Please input sizes of array1 and array2: "<<endl;
cin>>M>>N;
int** arr=new int*[M];//开辟一个动态二维数组，高M，宽N
for(int k=0;k<N;k++)
arr[M]=new int[N];
for(int i=0;i<M;i++)
{
for(int j=0;j<N;j++)
arr[i][j]=0;
}
choose(arr);
output(M,N,arr);
}
void output(int M,int N,int **arr)
{
for(int i=0;i<M;i++)
for(int j=0;j<N;j++)
cout<<arr[i][j]<<"-";
}
void choose(int **arr)
{
int i,j;
cout<<"Please input the two relations:"<<endl;
cin>>i>>j;
arr[i][j]=0;
}
#include<iostream>
using namespace std;
void output(int i,int j,int **a);
void choose(int **arr);
void main()
{
int M,N,temp1,temp2;
//int M=0,N=0;
//int *array1=new int[M];
//int *array2=new int[N];
end:cout<<"Please enter 1(continue) or 2(break) to choose:"<<endl;
cin>>temp1;
switch(temp1)
{
case 1:
{
cout<<"Please input sizes of height and width: "<<endl;
cin>>M>>N;
int** arr=new int*[M];//??????????,?M,?N
for(int k=0;k<M;k++)
arr[k]=new int[N];
for(int i=0;i<M;i++)
{
for(int j=0;j<N;j++)
arr[i][j]=0;
}
choose(arr);
output(M,N,arr);
cout<<"Please input number 1 to again or 2 to exit:"<<endl;
cin>>temp2;
switch(temp2)
{
case 1:
goto end;
case 2:
exit(1);
}
system("pause");
}
case 2:
break;
}
}
void choose(int **arr)
{
int i,j;
cout<<"Please input the two relations:"<<endl;
cin>>i>>j;
i--;
j--;
arr[i][j]=1;
}
void output(int M,int N,int **arr)
{
for(int i=0;i<M;i++)
{
for(int j=0;j<N;j++)
{
cout<<arr[i][j]<<"-";
}
cout<<endl;
}
}
