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#include<iostream>
using namespace std;
const int n=10;
struct link
{
char key;
link *next;
}
*g[n];
void print(link *g[n])
{
link *p;
{
for(int i=0; i<n; i++)
{
if(g[i])
{
p=g[i];
while(p)
{
cout<<p->key;
p=p->next;
}
cout<<endl;
}
}
}
}
void init(link *g[n])
{
for(int i=0;i<n;i++)
g[i]=NULL;
}
int search_node(char c, link *g[n])
{
int flag=0;
for(int i=0;i<n;i++)
if(g[i])
if(g[i]->key==c)
flag=1;
return flag;
}
int search_arc(char c1, char c2, link *g[n])
{
int flag=0;
if(search_node(c1,g) && (search_node(c2,g)))
{
int i=0;
while(g[i]==NULL||g[i]->key!=c1)i++;
link *p=g[i]->next;
if(p)
{
while(p->key!=c2 && p->next)
p=p->next;
if(p->key==c2)
flag=1;
}
}
return flag;
}
void add_node(char c, link *g[n])
{
if(search_node(c,g))
cout<<"In Exsitsing node: ";
else
{int i=0;
while(g[i]&&i<n) i++;
if(g[i]==NULL)
{
g[i]=new link;
g[i]->key=c;
g[i]->next=NULL;
}
else cout<<"Overflow";
}
}
void add_arc (char c1, char c2, link *g[n])
{
if (search_arc(c1,c2,g))
{
cout<<"In Existing arc";}
else
{
if(!(search_node(c1,g)))
add_node(c1,g);
if(!(search_node(c2,g)))
add_node(c2,g);
int i=0;
while(g[i]==NULL||g[i]->key!=c1)
i++;
link *p=new link;
p->key=c2;
p->next=g[i]->next;
g[i]->next=p;
}
}
int main()
{
char c,k;
int m;
do
{
cout<<"\n MENU ";
cout<<"\n 1.Add node ";
cout<<"\n 2.Add arc ";
cout<<"\n 3.Print All ";
cout<<"\n 4.End ";
cout<<"\n Choice: ";
cin>>m;
switch(m)
{
case 1:
{
cout<<"\n Node: ";
cin>>c;
add_node(c, g);
break;
}
case 2:
{
cout<<"\n First node";
cin>>c;
cout<<"\n Second node";
cin>>k;
add_arc(c, k, g);
break;
}
case 3:
{
print(g);
}
}
}
while(m!=4);
return 0;
}
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