what's the problem with this code?

Question

#include <iostream>
using namespace std;

int main();
{
int mark;
cout << "Enter your marks";
cin >> mark;

if (mark >= 50) {
cout << "You passed." << endl;
if (mark >= 70) {cout << "Distinction"};
if (mark >= 60) {cout << "First class"};
if (mark == 100) {
cout <<"Perfect!" << endl;
}
}
else {
cout << "You failed. :()" << endl;
}

return 0;
}

Answer 1

Mitesh you should use else if
if (marks>=50)
{
cout<<"you passed"<<endl;
if(marks==100)
cout<<"perfect"<<endl;
else if(marks>=70)
cout<<"distinction"<<endl;
else
cout<<"first class"<<endl;
}

the error in your program is that when you will enter 100 it will give output as
distinction
first-class
perfect

Answer 2

You have extra semicolons
{cout << "Distinction"};
{cout << " First clasd"};
Make it like this:
{cout << "Distinction"; }
{cout << " First class"; }
and it shoult compile.

Answer 3

dont use if for every condition use else for new condition