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Mod_6_5_Practic.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+
+class Student{
+private:
+    string pass;
+
+protected:
+    int eng_mark; 
+
+public:
+    string name;
+    char sec;
+    int roll;
+
+    void setPassword(string p){
+        pass = p;
+    }
+    void setMark(int mark){
+        eng_mark = mark;
+    }
+    string getPassword(){
+        return "***";
+    }
+    int getMark(){
+        return eng_mark;
+    }
+    void printData(Student st[], int n){
+        cout<<endl<<"\tName"<<"\t\tSection"<<"\t\tRoll"<<"\t\tMarks"<<"\t\tPassword"<<endl<<endl;
+        for(int i=0; i<n; i++){
+            cout<<i+1;
+            for(int j=i; j<i+1; j++){ 
+                cout<<"\t"<<st[j].name
+                <<"\t\t"<<st[j].sec
+                <<"\t\t"<<st[j].roll
+                <<"\t\t"<<st[j].getMark()
+                <<"\t\t"<<st[j].getPassword()
+                <<endl; 
+            }
+            cout<<endl;
+        }
+    }
+    void updateMark(string p, int up_mark){
+        if(pass == p){
+            setMark(up_mark);
+        }
+        else{
+            cout<<"Password did'nt match";
+        }     
+    }
+};
+
+int main(){
+
+    int n;
+    cin>>n;
+    Student st[n];
+    //name, sec, roll, mark, pass
+    for(int i=0; i<n; i++){
+        string pass;
+        int mark;
+        cin>>st[i].name>>st[i].sec>>st[i].roll
+        >>mark>>pass;
+        st[i].setMark(mark);
+        st[i].setPassword(pass);
+    }
+    st[n].printData(st, n);
+
+    /* Searching ..... */
+    int roll;
+    int mark;
+    string pass;
+    cout<<"For update the mark"<<endl<<"Please enter the Roll, Mark & Password: ";
+    cin>>roll>>mark>>pass;
+    bool found = false;
+    for(int i=0; i<n; i++){
+        if(st[i].roll == roll){
+            found = true;
+            st[i].updateMark(pass, mark);
+            st[i].printData(st, n);
+        }
+    }
+    if(!found){
+        cout<<"Student not found";
+        return 0;
+    }
+    return 0;
+}