c++ push_back doesn't work as it is supposed
- by angela
I have a class symbol_table that has a vector of objects of another class row_st.also I have an enter method where inserts objects of row_st with a passed name into the vector of desired symbol_table.but when I call the enter to enter objects with name :
a;b;c;Iwill get the following result: a,b,c;b,c;c.the first element of vector gets the name of all the entered objects. and the second element also gets the name of the later entries.
class row_st
{
public:
char* name;
type_u type;//int:0,flaot:1;char:2,bool:3,array:
int offset;
symbol_table *next;
symbol_table *current;
};
class symbol_table
{
public:
vector <row_st *> row;
int type;
int header;
int starting_stmt;
int index;
int i;
symbol_table *previous;
symbol_table(){ header=0;
previous=0; index=0;i=0;starting_stmt=0;}
};
and here it is the enter method:
int enter(symbol_table *table,char* name,type_u type){
row_st *t=new row_st;
t->name=name;
t->type=type;
t->offset=table->index;
t->current=table;
table->index++;
t->next=0;
table->row.push_back(t);
table->header +=1;
return table->row.size()-1;
}
the push_backed elements all points to the same address.the new call makes the same row_st every time it is called.what should I do?
