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  1. #include<iostream.h>
  2.  
  3. #include<stdio.h>
  4.  
  5. class student
  6.  
  7. {
  8.  
  9.  char Name[25];
  10.  
  11.  int rno,total_marks, marks[5];
  12.  
  13.  char grade, d;
  14.  
  15.  float avg;
  16.  
  17.  
  18.  
  19. char calgrade()
  20.  
  21.                 {
  22.  
  23.                 for(int i=0;i<5;i++)
  24.  
  25.                         {
  26.  
  27.                           total_marks+=marks[i];
  28.  
  29.                           avg=total_marks/5;
  30.  
  31.                           if(avg>=80&& avg<=100)
  32.  
  33.                           grade='A';
  34.  
  35.                           if(avg>=60)
  36.  
  37.                           grade='B';
  38.  
  39.                           if(avg>=40)
  40.  
  41.                           grade='C';
  42.  
  43.                           else
  44.  
  45.                           grade='D';
  46.  
  47.                           }
  48.  
  49.                           return grade;
  50.  
  51.                         }
  52.  
  53.  public: void input()
  54.  
  55.                         {
  56.  
  57.                          cout<<"\n Enter student name";
  58.  
  59.                          gets(Name);
  60.  
  61.                          cout<<"\n Enter rollno";
  62.  
  63.                          cin>>rno;
  64.  
  65.                          cout<<"\n Enter marks";
  66.  
  67.                          for(int i=0;i<5;i++)
  68.  
  69.                          cin>>marks[i];
  70.  
  71.                          d=calgrade();
  72.  
  73.                         }
  74.  
  75.                         void display()
  76.  
  77.                         {
  78.  
  79.                           cout<<"\n Name:"<<Name;
  80.  
  81.                           cout<<"\n Rollno:"<<rno;
  82.  
  83.                           cout<<"\n Marks of 5 subjects :";
  84.  
  85.                           for(int i=0;i<5;i++)
  86.  
  87.                           cout<<marks[i]<<" ";
  88.  
  89.                           cout<<"\n Average mark "<<avg;
  90.  
  91.            cout<<"\n The grade is :"<<d;
  92.  
  93.                                                 }
  94.  
  95.                         }B[10];
  96.  
  97.                         void main()
  98.  
  99.                         {
  100.  
  101.                          int n;
  102.  
  103.                          cout<<"\n Enter number of students";
  104.  
  105.                          cin>>n;
  106.  
  107.                          for(int i=0;i<n;i++)
  108.  
  109.                          B[i].input();
  110.  
  111.                          for(i=0;i<n;i++)
  112.  
  113.                          B[i].display();
  114.  
  115.                         }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cpp:1:21: fatal error: iostream.h: No such file or directory
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/kuu6XT
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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