For example: cout
*/
# include & ltiostream & gt
# include & ltcstdlib & gt
# include & lt string & gt
# include & ltcstring & gt
usingnamespacestd
const int error = 0；
const int suc = 1；
classes
{
Private:
Stringname//string is a string class, in which a string of student names is defined.
Character number [11]; //Define char and prepare to call the character numeric conversion function atol.
floatsc _ computer
charmajor
Public:
stu()；
Stu (string a, char b [], char c): name (a), sc _ computer(c)// constructor initialization.
{ int I = 0；
while(b[i]！ = ' \ 0 '){ num[I]= b[I]； i++； }
num[I]= ' \ 0 '； }
int sort _ Sc(Stusc[]，int count)； //Sort students' information according to their computer scores.
int sub _ Major(Stu nm[]，int count)； //Learn by major.
int Show_Stu(Stu sc[]，int count)； //Display student information
int Init_Stu(Stu sc[]，int count)； //Student entry
};
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intmain()
{
int CNT = 0；
Stu * Stu, Saint;
Char selection;
char ch 1；
Cout & lt& lt”\ t \ t * * * \ n \ n \ t \ Welcome to the student information management inquiry system \ n \ n \ t \ t * * \ n \ ";
Cout & lt& lt”\ t \ t \ t * * * * * * * * * menu * * * * * * * * * * * * * * * * * * * \ n \ ";
cout & lt& lt" \ t \ t \ t \ t 1 & gt； Student information entry \ n \ n "；;
Cout & lt& lt" \ t \ t \ t \ t2> Student information display \ n \ n "；;
Cout & lt& lt" \ t \ t \ t \ t3> student information sorting \ n \ n "；;
Cout & lt& lt" \ t \ t \ t \ t4> Student Major \ n "
Cout & lt& lt" \ t \ t \ t \ t0> exit \ n "；;
ch 1 = ' y '；
Do {
Cout & lt< "\ nPlease select a function option:";
CIN & gt； & gt selection;
Switch (selection)
{
Case "0": {ch1= "n"; Break; }
Case' 1':
Cout & lt& lt Please enter the number of students:
CIN & gt； & gtcnt
Stu = new Stu [CNT+1]; //Stu[0] does not store student information, starting with the array subscript 1.
st.Init_Stu(stu，CNT)；
Break; }
Case' 2':
Cout & lt& lt "Output all student information:"
st.Show_Stu(stu，CNT)；
Break; }
Case' 3':
st.Sort_Sc(stu，CNT)；
st.Show_Stu(stu，CNT)；
Break; }
Case' 4':
st.Sub_Major(stu，CNT)；
st.Show_Stu(stu，CNT)；
Break; }
Default value: {
Cout & lt& lt" \ a \ Warning: You entered it incorrectly. Do you want to enter again? (Yes/No) \ t "；;
CIN & gt； & gtch 1； } }
} while(ch 1 = = ' y ')；
Returns 0;
}
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Stu::Stu(){ name = " 0 "； sc _ computer = 0； major =“0”； }
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Intstu:: sort _ sc (stusc [], int count)// Use bubble sorting method to operate.
{
if(count & lt； 1){
Cout & lt& lt "no student information"; Error returned; }
Otherwise {
for(int I = 1； I < count; i++)
for(int j = 1； j & lt= count-I； j++)
if(sc[j].sc _ computer & gtsc[j+ 1]。 Sc _ computer)
{ sc[0]= sc[j]； sc[j]= sc[j+ 1]； sc[j+ 1]= sc[0]； }
}
Return to suc
}
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int Stu::Sub _ Major(Stu nm[]，int count)
{ long exg
if(count & lt； 1){
Cout & lt& lt "No student information"
Otherwise {
for(int I = 1； I < = count; i++)
{
if((exg=atol(nm[i])。 num))% 2 = = 0)nm[I]。 Major =' B// atlo is a function that converts a string into an integer.
Elson [me]. major = ' A
}
}
Return to suc
}
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Intstu:: show _ stu (stusc [], int count)// displays student information.
{
int I；
if(count & lt； 1){
Cout & lt& lt "No student information"
Otherwise {
Cout & lt& lt "student name \ t"
for(I = 1； I < = count; i++)
cout & lt& ltsc[i]。 Name & lt& lt" \ t \ t "<& ltsc[i]. num & lt& lt" \ t \ t " & lt& ltsc[i]。 Sc _ computer & lt& lt" \ t \ t "<& ltsc[i]. Major & lt& ltendl
}
returnsuc
}
Intstu:: init _ stu (stusc [], int count)// student input.
{ if(count & lt； 1){
Cout & lt& lt "No student information"
Otherwise {
Cout & lt& lt "student name \ t"
for(int I = 1； I < = count; i++)
CIN & gt； & gtsc[i]。 Name & gt& gtsc[i]. num & gt& gtsc[i]。 Sc _ computer;
}
Return to suc
}