C++学生管理系统

#include using namespace std; #ifndef student_h_h #define student_h_h #define M 100 class student { public: }; #endif 函数体

#include #include\"student.h\" #include #include #include using namespace std; vector svec; extern int N;

void student::entering() {

string SID[M], SName, SSex, SAddress, SPhone, SDormitory; int SAge; ofstream outfile;

outfile.open(\"student.txt\"); if (!outfile) {

cerr << \"文件打开失败\" << endl; system(\"pause\"); exit(1); string ID; string Name; int Age; string Sex; string Address; string Phone; string Dormitory; void entering(); void show(); void search(); void del(); void count(); void change();

}

outfile << \"ID\" << \" \"; outfile <<\"Name\" <<\" \"; outfile << \"Age\" <<\" \"; outfile << \"Sex\" <<\" \"; outfile << \"Address\" <<\" \"; outfile << \"Phone\" <<\" \"; outfile << \"Dormitory\" << endl; for (int i = 1; i < M; i++) {

cout << \"请输入学号（按0返回）\" << endl; cin >> SID[i];

for (int j = i-1; j >= 0; j--) { }

ID = SID[i];

if (ID == \"0\")break; if (ID != \"0\") {

outfile << ID << \" \"; cout << \"请输入姓名\" << endl; cin >> SName; Name = SName;

outfile << Name << \" \"; cout << \"请输入年龄\" << endl; cin >> SAge; Age = SAge;

outfile << Age << \" \"; cout << \"请输入性别\" << endl; cin >> SSex; Sex = SSex;

outfile << Sex << \" \"; cout << \"请输入家庭住址\" << endl; cin >> SAddress; Address = SAddress;

outfile << Address << \" \"; cout << \"请输入联系电话\" << endl; cin >> SPhone; if (SID[i] == SID[j]) { }

cout << \"学号重复\" << endl;

cout << \"请重新输入学号（按0返回）\" << endl; cin >> SID[i];

}

}

}

Phone = SPhone;

outfile << Phone << \" \"; cout << \"请输入寝室号\" << endl; cin >> SDormitory; Dormitory = SDormitory; outfile << Dormitory << endl; N++;

outfile.close(); ifstream infile;

infile.open(\"student.txt\"); if (!infile) { } string s;

//vector svec; while (getline(infile, s))

svec.push_back(s); infile.close();

cerr << \"文件打开失败\" << endl; system(\"pause\"); exit(1);

void student::show() { }

ifstream infile;

infile.open(\"student.txt\"); if (!infile) { } string s;

vector svec1; while (getline(infile, s))

svec1.push_back(s); infile.close();

for (vector::iterator iter = svec1.begin();iter!=svec1.end();iter++) { }

cout <<*iter << endl;

cerr << \"文件打开失败\" << endl; system(\"pause\"); exit(1);

void student::search() {

int select, i = 0,pos=0,pos1=0,j=1; string str[M], id, name;

for (vector::iterator iter = svec.begin(); iter != svec.end(); iter++) { }

cout << \"1、按学号查询\" <> select; switch (select) {

case 1:cout << \"请输入学号\" << endl;

cin >> id;

for ( j = 1; j <= N; j++) { }

if (j > N)

cout << \"查找失败\" << endl; break; cin >> name;

for (int k = 1; k < i; k++) {

bool flag = false;

if (name == str[k].substr(9, pos1)) { } else {

if (flag == true)

cout << \"查找失败\" << endl; flag = true;

cout << str[k] << endl; continue;

if (id == str[j].substr(0, 5)) { }

cout << str[j] << endl; break;

pos = id.size();

str[i] = *iter; i++;

case 2:cout << \"请输入姓名\" << endl; pos1 = name.size();

}

}

}

}

void student::del() { string name[M], sex[M], address[M], phone[M], dormitory[M], id[M]; int age[M], j = 0,count; char a[M]; ifstream infile;

infile.open(\"student.txt\",ios::in); if (!infile) { cerr << \" open error\" << endl; exit(1);

}

while (infile.get(a[j])) { if (a[j] == '\\n')break; j++;

}

a[j] = '\\0'; cout << a << endl;

for (int i = 1; i<=N; i++) { infile >> id[i]; cout << \"第\"<> name[i];

cout << name[i] << setw(4); infile >> age[i];

cout << age[i] << setw(4); infile >> sex[i];

cout << sex[i] << setw(4); infile >> address[i];

cout << address[i] << setw(4); infile >> phone[i];

cout << phone[i] << setw(4); infile >> dormitory[i]; cout << dormitory[i]; cout << endl;

}

infile.close();

cout << \"请输入您想删除学生的序号\" << endl;

cin >> count;

; }

ofstream outfile;

outfile.open(\"student.txt\"); if (!outfile) { }

outfile << \"ID\" << \" \"; outfile << \"Name\" << \" \"; outfile << \"Age\" << \" \"; outfile << \"Sex\" << \" \"; outfile << \"Address\" << \" \"; outfile << \"Phone\" << \" \"; outfile << \"Dormitory\" << endl; for (int k = 1; k<=N; k++) { }

outfile.close(); N = N - 1;

cout << \"已删除成功！\" << endl;

if (k!= count) { }

outfile << id[k] << \" \"; outfile << name[k] << \" \"; outfile << age[k] << \" \"; outfile << sex[k] << \" \"; outfile << address[k] << \" \"; outfile << phone[k] << \" \"; outfile << dormitory[k] << endl; cerr << \"文件打开失败\" << endl; system(\"pause\"); exit(1);

void student::count() {

string name[M], sex[M], address[M], phone[M], dormitory[M], id[M]; int age[M], boy = 0, girl = 0, j = 0; char a[M]; ifstream infile;

infile.open(\"student.txt\", ios::in); if (!infile) { }

cerr << \" open error\" << endl; exit(1);

}

while (infile.get(a[j])) { }

a[j] = '\\0';

for (int i = 0; i < N; i++) { }

cout << \"学生总数有\" << boy + girl << \"人\" << endl; cout << \"其中\";

cout << \"男生有：\" << boy << \"个\"<infile >> id[i]; infile >> name[i]; infile >> age[i]; infile >> sex[i]; if (sex[i] == \"男\")

boy++; else girl++;

infile >> address[i]; infile >> phone[i]; infile >> dormitory[i]; if (a[j] == '\\n')break; j++;

void student::change() {

char a[M]; int k=0,j=0; int age[M];

string name[M], sex[M], phone[M], address[M], dormitory[M], id[M]; if (N == 0) { } else {

ifstream infile(\"student.txt\"); if (!infile) { }

while (infile.get(a[j]))

cerr << \" open error\" << endl; exit(1);

cout << \"没有学生信息可修改\" << endl;

{ }

a[j] = '\\0'; cout << a << endl;

for (int i = 1; i <= N; i++) { }

infile.close();

cout << \"你想修改第几个数据? \" << endl; cin >> k;

cout << \"请输入新的数据：\" << endl; cout << \"请输入学号：\" << endl; cin >> id[k];

cout << \"请输入姓名：\" << endl; cin >> name[k];

cout << \"请输入年龄：\" << endl; cin >> age[k];

cout << \"请输入性别：\" << endl; cin >> sex[k];

cout << \"请输入家庭地址：\" << endl; cin >> address[k];

cout << \"请输入电话号：\" << endl; cin >> phone[k];

cout << \"请输入宿舍号：\" << endl; cin >> dormitory[k]; ofstream outfile;

outfile.open(\"student.txt\");

infile >> id[i]; cout << \"第\" << i << \"个\" << \" \"; cout << id[i] << setw(4); infile >> name[i];

cout << name[i] << setw(4); infile >> age[i];

cout << age[i] << setw(4); infile >> sex[i];

cout << sex[i] << setw(4); infile >> address[i];

cout << address[i] << setw(4); infile >> phone[i];

cout << phone[i] << setw(4); infile >> dormitory[i]; cout << dormitory[i]; cout << endl;

if (a[j] == '\\n')break; j++;

}

}

if (!outfile) { }

outfile << \"ID\" << \" \"; outfile << \"Name\" << \" \"; outfile << \"Age\" << \" \"; outfile << \"Sex\" << \" \"; outfile << \"Address\" << \" \"; outfile << \"Phone\" << \" \"; outfile << \"Dormitory\" << endl; for (int p = 1; p <= N; p++) { }

outfile.close(); cout << \"

已修改成功！ \" << endl;

outfile << id[p] << \" \"; outfile << name[p] << \" \"; outfile << age[p] << \" \"; outfile << sex[p] << \" \"; outfile << address[p] << \" \"; outfile << phone[p] << \" \"; outfile << dormitory[p] << endl; cerr << \"文件打开失败\" << endl; system(\"pause\"); exit(1);

菜单函数体

#include using namespace std; int menu() {

int choice; do {

cout << \"\****************************\\n\"; cout << \"\* 学生基本信息管理系统 *\\n\"; cout << \"\*==========================*\\n\"; cout << \"\* 1、录入学生信息 *\\n\"; cout << \"\* 2、显示学生信息 *\\n\"; cout << \"\* 3、查询学生信息 *\\n\"; cout << \"\* 4、统计学生信息 *\\n\"; cout << \"\* 5、删除学生信息 *\\n\"; cout << \"\* 6、修改学生信息 *\\n\"; cout << \"\* 0、退出管理系统 *\\n\"; cout << \"\****************************\\n\";

}

cout << \"\\n\请选择:\"; cin >> choice;

} while (choice < 0 || choice > 7); return choice;

主函数

#include #include\"student.h\" using namespace std; int N = 0;

extern int menu(); int main() { }

system(\"pause\"); student a; int an; do {

an = menu(); switch (an) {

case 1: a.entering(); break; case 2: a.show(); break; case 3: a.search(); break; case 4: a.count(); break; case 5: a.del(); break; case 6: a.change(); break; case 0: break;

default: cout << \"选择错误。\\n\"; break; }

} while (an); return 0;