multiple inheritance

gistfile1.txt

#include<iostream>
using namespace std;
class a{
	protected:
		int sa,a1,b1;
		public:
			san(){
			cout<<"\n Enter the name No";
			cin>>sa;
			cout<<"\n Enter The mark";
			cin>>a1>>b1;
	}
};
class b{
	protected:
		char grade;
		int Per;
public:
	san1(){
	
	cout<<"\n Enter percantage of score";
	
}};
class c : public a,public b
{
	int total ,avg,grade;
	public:
		void display(){
			total=a1+b1;
			avg=(a1+b1)/2;
			cout<<"~~~Total mark\n"<<total;
			cout<<"\n~~Average~~\n"<<avg;
			cout<<"roll no"<<sa;
			cout<<"\n Enter grade";
	if (total>100 && (total)<120)
	{
		cout<<"your grade is D";
	}
	if ((total)>120 && (total)<150)
	{
		cout<<"your grade is C";
		
	}
	if ((total)>150 && (total)<180)
	{
		cout<<"Your grade is B";
	}
	if((total)>180 && (total)>190)
	{
		cout<<"Your grade is A";
	}
		}
};
int main()
{
	c a;
	a.san();
	a.san1();
	a.display();
}