#include<iostream>
//#include<cstring>???//為什么這里注釋了程序還能正常運行？程序里有strcpy、strlen
using?namespace?std;
const?int?SLEN?=?30;
struct?student
{
?char?fullname[SLEN];
?char?hobby[SLEN];
?int?ooplevel;
};
int?getinfo(student?pa[],?int?n);
void?display1(student?st);
void?display2(const?student?*ps);
void?display3(const?student?pa[],?int?n);
int?main()
{
?cout?<<?"Enter?class?size:?";
?int?class_size;
?cin?>>?class_size;
?while?(cin.get()?!=?'\n')
??continue;
?student?*ptr_stu?=?new?student[class_size];
?int?entered?=?getinfo(ptr_stu,?class_size);
?for?(int?i?=?0;?i?<?entered;?i++)
?{
??display1(ptr_stu[i]);
??display2(&ptr_stu[i]);
?}
?display3(ptr_stu,?entered);
?delete[]?ptr_stu;
?cout?<<?"Done\n";
?return?0;
}
int?getinfo(student?pa[],?int?n)
{
?int?num_array_elem?=?n;
?char?temp[SLEN];
?for?(int?i?=?0;?i?<?n;?i++)
?{
??cout?<<?"Enter?name:?";
??cin.getline(temp,?SLEN);
??bool?blank_line?=?true;????????????????????
??for?(unsigned?j?=?0;?j?<?strlen(temp);?j++)//strlen
??{??????????????????????????????????????????
???if?(!isspace(temp[j]))????????????????????
???{?????????????????????????????????????????
????blank_line?=?false;??????????????????????
????break;???????????????????????????????????
???}
??}
??if?(blank_line)
??{
???num_array_elem?=?i;
???break;
??}
??strcpy_s(pa[i].fullname,?temp);???????????????//strcpy
??cout?<<?"Enter?hobby:?";
??cin.getline(pa[i].hobby,?SLEN);
??cout?<<?"Enter?ooplevel:?";
??cin?>>?pa[i].ooplevel;
??cin.get();????????????????????????????????//這一句什么作用？
?}
?cout?<<?endl;
?return?num_array_elem;
}
void?display1(student?st)
{
?cout?<<?st.fullname?<<?'\t'?<<?st.hobby?<<?'\t'?<<?st.ooplevel?<<?endl;
}
void?display2(const?student?*ps)
{
?cout?<<?ps->fullname?<<?'\t'?<<?ps->hobby?<<?'\t'?<<?ps->ooplevel?<<?endl;
}
void?display3(const?student?pa[],?int?n)
{
?for?(int?i?=?0;?i?<?n;?i++)
?{
??cout?<<?pa[i].fullname?<<?'\t'
???<<?pa[i].hobby?<<?'\t'
???<<?pa[i].ooplevel?<<?endl;
?}
}
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