practice program C++

Question

So for practice I decided to look for some practical ways to test the skills I have learned recently. The program I picked instructs to write a program that allows the user to enter the grade scored in a programming class (0-100).
If the user scored a 100 then notify the user that they got a perfect score.

Modify the program so that if the user scored a 90-100 it informs the user that they scored an A

Modify the program so that it will notify the user of their letter grade
0-59 F 60-69 D 70-79 C 80-89 B 90-100 A

The entire thing should be able to be written using basic input/output
logic (if statements, switch statements).

my switch statements don't seem to want to be wanting to work. No matter what grade I input it reads " You scored a 90 A" so even if I input 91 or even 95 in the input line I get " You scored a 90 A".

Answer 1

The problem is in the first line:

#include <iostream>

Instead of:

#include “iostream”

Putting the include directory in “” instead of <> indicates that it is relative to the directory of the program. For DLLs, statically linked libraries, or any standard headers, use <>.

Answer 2

I didn't even go any further once I noticed the problem but here it is.

#include "iostream"
using namespace std;

int main()
{

int grade = 100;
switch (grade) {
case 90:
cin >> grade;
cout << "You scored a 90 A\n";
break;
case 91:
cin >> grade;
cout << "You scored a 91 A\n";
break;
}
return 0;
}

Answer 3

You should put the
cin >> grade;
before the switch statement.

Answer 4

To know what you did wrong we need to see your code.
We can't guess what happens because you are just giving us a blackbox as information.

Answer 5

Thanks for the helps everyone! Jacob was correct. I guess in the excitment of giving myself a project I overlooked that little bit. Also thank you for your input on the cin >> grade statement Jared! That is going to save a lot of lines.

Answer 6

Normally you can't use cin inside a switch-case.
It's possible, but you would need to build a way around it via function call.
The reason it works here is that it gets all inputs at the start.