c++ Create a simple program to claculate 2 marks

#include <iostream>

using namespace std;

void main()

{

int marks1,marks2;

int total=0;

cout<<"Enter 1st marks";

cout<<"\n";

cin>> marks1;

cout<<"\n";

cout<<"Enter 2nd markd";

cout<<"\n";

cin>> marks2;

cout<<"\n";

total=marks1=marks2;

cout<<"\n";

cout<<"total marks "<< total;

system("pause");

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}