Add source code of Lesson 8C

Bai thuc hanh so 8C/FILE.txt

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+9
+7 2 -3 5 0 1 3 8 4

Bai thuc hanh so 8C/SORTED_FILE.txt

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+9
+-3 0 1 2 3 4 5 7 8 

Bai thuc hanh so 8C/bai1.cpp

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+#include <iostream>
+#include <math.h>
+
+using namespace std;
+
+void inputFloat(float &x, char c){
+  cout << "Nhap so thuc " << c << ": ";
+  cin >> x;
+}
+
+void inputInteger(int &x, char c){
+  cout << "Nhap so nguyen " << c << ": ";
+  cin >> x;
+}
+
+float area(float x, float y){
+  return x*y;
+}
+
+int sum(int n){
+  int ans=0;
+  for (int i=0;i<n;i+=2){
+    if (i%3==0) ans+=i;
+  }
+  return ans;
+}
+
+float f1(float x,int n){
+  float ans=2016*pow(x,n),temp=1;
+  for (int i=1;i<=n;i++){
+    temp*=x/3;
+    ans+=temp;
+  }
+  return ans;
+}
+
+float f2(float x, int n){
+  float ans;
+  if (n>10) ans=2016*x;
+  else {
+    ans=exp(x);
+    for (int i=1;i<=n;i++) ans+=i;
+  }
+  return ans;
+}
+
+int main(){
+  float x,y;
+  inputFloat(x,'x');
+  inputFloat(y,'y');
+  int n;
+  inputInteger(n,'n');
+  cout << "Dien tich cua hinh chu nhat co canh la " << x << " va " << y << " la " << area(x,y) << "\n";
+  cout << "Tong cac so chan va chia het cho 3 trong doan tu 1 den " << n << " la " << sum(n) << "\n";
+  cout << "F1(" << x << "," << n << ") = " << f1(x,n) << "\n";
+  cout << "F2(" << x << "," << n << ") = " << f2(x,n) << "\n";
+  return 0;
+}

Bai thuc hanh so 8C/bai2.cpp

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+#include <iostream>
+
+using namespace std;
+
+int main(){
+  int n;
+  int a[1000];
+  cout << "Nhap so phan tu cua day: ";
+  cin >> n;
+  for (int i=0;i<n;i++){
+    cout << "Nhap phan thu thu " << i+1 << ": ";
+    cin >> a[i];
+  }
+
+  for (int j=n-1;j>=1;j--){
+    for (int i=0;i<=j-1;i++){
+      if (a[i]>a[i+1]){
+        int tg=a[i];
+        a[i]=a[i+1];
+        a[i+1]=tg;
+      }
+    }
+  }
+  cout << "Mang sau khi da sap xep tang dan la: \n";
+  for (int i=0;i<n;i++){
+    cout << a[i] << " ";
+  }
+  cout << "\n";
+
+  int count=0;
+  for (int i=0;i<n;i++){
+    if (a[i]>=10 && a[i]<=20){
+      count++;
+    }
+  }
+  cout << "Co " << count << " phan tu trong mang thuoc [10, 20].\n";
+
+  bool found=false;
+  for (int i=0;i<n-2;i++){
+    if (a[i]%2==0 && a[i]+2==a[i+1] && a[i+1]+2==a[i+2]){
+      found=true;
+      break;
+    }
+  }
+  if (found==true) cout << "Mang co ton tai ba so chan lien tiep.\n";
+  else cout << "Mang khong ton tai ba so chan lien tiep.\n";
+
+  return 0;
+}

Bai thuc hanh so 8C/bai3.cpp

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+#include <iostream>
+
+using namespace std;
+
+int main(){
+  int n,m;
+  cout << "Nhap so hang cua ma tran: ";
+  cin >> n;
+  cout << "Nhap so cot cua ma tran: ";
+  cin >> m;
+  int a[n][m];
+  for (int i=0;i<n;i++){
+    for (int j=0;j<n;j++){
+      cout << "Nhap phan tu [" << i+1 << "," << j+1 << "]: ";
+      cin >> a[i][j];
+    }
+  }
+  cout << "\nMa tran vua nhap la:\n";
+  for (int i=0;i<n;i++){
+    for (int j=0;j<m;j++){
+      cout << a[i][j] << " ";
+    }
+    cout << "\n";
+  }
+  cout << "\n";
+  for (int i=0;i<n;i++){
+    int max=a[i][0];
+    for (int j=0;j<m;j++){
+      if (a[i][j]>max) max=a[i][j];
+    }
+    cout << "Gia tri max tren dong " << i+1 << " la " << max << "\n";
+  }
+
+  for (int j=0;j<m;j++){
+    int min=a[0][j];
+    for (int i=0;i<n;i++){
+      if (a[i][j]<min) min=a[i][j];
+    }
+    cout << "Gia tri min tren cot " << j+1 << " la " << min << "\n";
+  }
+  int b[m][n];
+  for (int i=0;i<m;i++){
+    for (int j=0;j<n;j++){
+      b[i][j]=a[j][i];
+      a[j][i]=-a[j][i];
+    }
+  }
+
+  cout << "\nMa tran a sau khi doi dau la:\n";
+  for (int i=0;i<n;i++){
+    for (int j=0;j<m;j++){
+      cout << a[i][j] << " ";
+    }
+    cout << "\n";
+  }
+
+  cout << "\nMa tran chuyen vi b la:\n";
+  for (int i=0;i<m;i++){
+    for (int j=0;j<n;j++){
+      cout << b[i][j] << " ";
+    }
+    cout << "\n";
+  }
+  cout << "\n";
+  for (int i=0;i<n;i++){
+    int count=0;
+    for (int j=0;j<m;j++){
+      if (a[i][j]>0) count++;
+    }
+    cout << "So phan tu duong tren dong " << i+1 << " cua a la " << count << "\n";
+  }
+  for (int i=0;i<m;i++){
+    int count=0;
+    for (int j=0;j<n;j++){
+      if (b[i][j]>0) count++;
+    }
+    cout << "So phan tu duong tren dong " << i+1 << " cua b la " << count << "\n";
+  }
+
+  return 0;
+}

Bai thuc hanh so 8C/bai4.cpp

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+#include <iostream>
+#include <string>
+
+using namespace std;
+
+int main(){
+  string s;
+  cout << "Nhap xau ki tu: ";
+  getline(cin,s);
+  bool found=false;
+  for (int i=0;i<s.length()-2;i++){
+    if (s[i]=='B' && s[i+1]=='I' && s[i+2]=='S'){
+      found=true;
+      break;
+    }
+  }
+  if (found==true) cout << "Xau vua nhap co chua tu \"BIS\".\n";
+  else cout << "Xau vua nhap khong chua tu \"BIS\".\n";
+
+  cout << "Nhap vao mot ki tu: ";
+  char c;
+  cin >> c;
+  for (int i=0;i<s.length();i++){
+    if (s[i]==c) s.erase(i,1);
+  }
+  cout << "Xau ki tu sau khi xoa moi ki tu " << c << " co trong xau la: " << s << "\n";
+  cout << "Nhap vao mot ki tu: ";
+  cin >> c;
+
+  cout << "Nhap vao vi tri k: ";
+  int k;
+  cin >> k;
+  s.insert(k,1,c);
+  cout << "Xau ki tu sau khi chen ki tu " << c << " vao vi tri " << k << " la: " << s << "\n";
+
+  return 0;
+}

Bai thuc hanh so 8C/bai5.cpp

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+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+int main(){
+  ifstream ifile("FILE.txt");
+  int n;
+  ifile >> n;
+  int a[n];
+  for (int i=0;i<n;i++){
+    ifile >> a[i];
+  }
+  ifile.close();
+  for (int j=n-1;j>=1;j--){
+    for (int i=0;i<=j-1;i++){
+      if (a[i]>a[i+1]){
+        int tg=a[i];
+        a[i]=a[i+1];
+        a[i+1]=tg;
+      }
+    }
+  }
+
+  ofstream ofile;
+  ofile.open("SORTED_FILE.txt");
+  ofile << n << endl;
+  for (int i=0;i<n;i++){
+    ofile << a[i] << " ";
+  }
+  ofile << endl;
+  ofile.close();
+  return 0;
+}

Bai thuc hanh so 8C/bai6.cpp

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+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+struct monhoc{
+  string ten;
+  int sotrinh;
+  float diem;
+};
+
+struct phieu{
+  string masinhvien;
+  string tensinhvien;
+  string lop;
+  int khoa;
+  monhoc mon[100];
+};
+
+int main(){
+  phieu phieubaodiem;
+  cout << "Nhap ma sinh vien: ";
+  getline(cin,phieubaodiem.masinhvien);
+  cout << "Nhap ten sinh vien: ";
+  getline(cin,phieubaodiem.tensinhvien);
+  cout << "Nhap lop: ";
+  getline(cin,phieubaodiem.lop);
+  cout << "Nhap khoa: ";
+  cin >> phieubaodiem.khoa;
+  float sum=0;
+  cout << "Nhap so luong mon hoc: ";
+  int n;
+  cin >> n;
+  for (int i=0;i<n;i++){
+    cout << "\nMon thu " << i+1 << ":\n";
+    cout << "\tTen mon hoc: ";
+    cin.ignore();
+    getline(cin,phieubaodiem.mon[i].ten);
+    cout << "\tSo trinh: ";
+    cin >> phieubaodiem.mon[i].sotrinh;
+    cout << "\tDiem: ";
+    cin >> phieubaodiem.mon[i].diem;
+    sum+=phieubaodiem.mon[i].diem;
+  }
+  cout << "\n\t\t\t\tPHIEU BAO DIEM\n";
+  cout << setw(20) << "Ma sinh vien: " << phieubaodiem.masinhvien << "        " << setw(20) << "Ten sinh vien: " << phieubaodiem.tensinhvien << "\n";
+  cout << setw(20) << "Lop: " << phieubaodiem.lop << "        " << setw(20) << "Khoa: " << phieubaodiem.khoa << "\n";
+  cout << setw(20) << "Bang diem:\n";
+  cout << setw(20) << "Ten mon" << setw(20) << "So trinh" << setw(20) << "Diem\n";
+  for (int i=0;i<n;i++){
+    cout << setw(20) << phieubaodiem.mon[i].ten << setw(20) << phieubaodiem.mon[i].sotrinh << setw(20) << phieubaodiem.mon[i].diem << "\n";
+  }
+  cout << "\n\tDiem trung binh: " << sum/n << "\n";
+  return 0;
+}