students.cpp

students.cpp

@@ -0,0 +1,113 @@
+#include <iostream>
+using namespace std;
+float student_percentage(float marks[], int column) {
+    float percentage;
+    float total = 0;
+    for(int i = 0; i < column; i++) {
+        total = total + marks[i];
+    }
+    percentage = (total / column);
+    return percentage;
+}
+float student_total_marks(float marks[], int column) {
+    float total = 0;
+    for(int i = 0; i < column; i++) {
+        total = total + marks[i];
+    }
+    return total;
+}
+float class_average(float marks[], int r) {
+    float average;
+    float total = 0;
+    for(int i = 0; i < r; i++) {
+        total = total + marks[i];
+    }
+    average = (total / r);
+    return average;
+}
+int sorting_marks(float marks[],int l, int u) {
+    float pivot = marks[l];
+    float temp;
+    int p = l;
+    while(l <= u) {
+        while(marks[l] >= pivot) {
+            l = l + 1;
+        }
+        while(marks[u] < pivot) {
+            u = u - 1;
+        }
+        if(l < u) {
+            temp = marks[u];
+            marks[u] = marks[l];
+            marks[l] = temp;
+        }
+    }
+    temp = marks[p];
+    marks[p] = marks[u];
+    marks[u] = temp;
+
+    return u;
+}
+void sorting_student_marks(float marks[], int l , int u) {
+    int p;
+    if(l < u) {
+        p = sorting_marks(marks,l,u);
+        sorting_student_marks(marks,l,p-1);
+        sorting_student_marks(marks,p+1,u);
+    }
+}
+int student_rank(float marks[],int size, float search) {
+    int l = 0, u = size - 1;
+    int mid = (l + u) / 2;
+    while(l <= u) {
+        if(marks[mid] == search) {
+            return mid;
+        }
+        else if(marks[mid] > search) {
+            l = mid + 1;
+            mid = (l + u) / 2;
+        }
+        else {
+            u = mid - 1;
+            mid = (l + u) / 2;
+        }
+    }
+    return -1;
+}
+int main()
+{
+    int row = 5;
+    int column = 6;
+    float total_marks = 0;
+    float marks[row][column];
+    float totalMark[row];
+    float *Student[row];
+    float percentage[column];
+    cout << "-----Input Student Detail--------" << endl;
+    for(int i = 0; i < row; i++) {
+        Student[i] = marks[i];
+        cout << endl << "Enter Marks For Student no."<<i+1<<": "<< endl;
+        for(int j = 0; j < column; j++) {
+            cout << "\tFor subject " << j + 1 << " : ";
+            cin >> Student[i][j];
+        }
+    }
+    for(int i = 0; i < row; i++) {
+        percentage[i] = student_percentage(Student[i],column); 
+        totalMark[i] = student_total_marks(Student[i],column); 
+    }
+    cout << endl << "--------Student percentage and rank--------" << endl;
+    for(int i = 0; i < row; i++) {
+        cout << endl << "Student no. " << i + 1;
+        cout << "Percentage : " << percentage[i];
+        total_marks = 0;
+        for(int j = 0; j < column; j++) {
+            total_marks = total_marks + Student[i][j];
+        }
+        cout<<"\nposition is: "<<(student_rank(totalMark,row,total_marks)+1);
+    }
+    cout << endl << "--------Class average---------" << endl << endl;
+    cout << "average of the class is: "<<class_average(percentage,row)<<endl;
+    sorting_student_marks(totalMark,0,row);
+    return 0;
+}