Question

1. Use C++
2. Create a Student header file (C++) . Declare the following operations in the file.
   1. setName()
   2. setMarks()
   3. setDateOfBirth()
   4. calculateGrade() - This method should compute and return grades based on the mark the student entered
   5. calculateAge() - This method should compute and return age using the DateOfBirth the user entered
   6. displayDetails() - This method should return a string displaying all the details of the user.
3. Now write the implementation class for the header file.
4. Now reuse these C++ Code in Python.

Answer 1

head.h:-

#include<stdio.h>
#include <ctime>
void Setname(char *a){
   printf("enter name: ");
   gets(a); //taking name string from user
}
int Setmarks(){
   int a;
   printf("Enter marks: ");
   scanf("%d",&a); //taking marks from user
   return a;
}
int SetDateOfBirth(int a[]){
   printf("Enter your date of birth:\n");
   printf("Enter day: "); //taking details of date of birth
   scanf("%d",&a[0]);
   printf("Enter Month: ");
   scanf("%d",&a[1]);
   printf("Enter year: ");
   scanf("%d",&a[2]);
}
char calculategrade(int a){ //calculating grade function
   if(a<=100 && a>=90)
       return 'A';
   if(a<=89 && a>=80)
       return 'B';
   if(a<=79 && a>=70)
       return 'c';
   if(a<=69 && a>=60)
       return 'D';
   if(a<=59 && a>=50)
       return 'E';
   else
       return 'F';
}
int calculateage(int a[]){ //calculating age
   time_t now = time(0);
   tm *ltm = localtime(&now); //taking current time using time module
   int year=1900+ltm->tm_year;  
   int month=1+ltm->tm_mon;
   int day=ltm->tm_mday ;
   int monthlist[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; //days in each month
   if (a[0] > day) {
day = day + monthlist[a[1] - 1];
month =month - 1;
}
if (a[1] > month) {
year = year - 1;
month = month + 12;
}
int calculateddate = day - a[0];
int calculatedmonth = month - a[1];
int calculatedyear = year - a[2];
printf("\nPresent Age: Years: %d Months: %d Days:"" %d\n", calculatedyear, calculatedmonth, calculateddate);
}
void Displaydetails(){
       char a[50];
   int dob[3];
   Setname(a);
   int marks=Setmarks();
   SetDateOfBirth(dob);
   printf("********** Details *************\n");
   printf("Name :- %s",a);
   printf("\nGrade :- %c",calculategrade(marks));
   calculateage(dob);
  
}

Main.cpp:-

#include<stdio.h>
#include "head.h"
#include<string>

using namespace std;
int main(){
   Displaydetails();
}

output:-