Need Help With Code

[Lanky]

I'm not quite sure what to do here but it says that a was not declared for switch
but as far as i can tell it is and it says it is expecting an initializer before
cin << a;

   int main(){
     cout << "what is your grade in percent?";
     int a
     cin << a;
     
switch(a){
    case a < 59:
        cout << "You got an F";
    break;
    case a < 69:
        cout << "You got a D";
    break;
    case a < 79:
        cout << "You got a C";
    break;
    case a < 89:
        cout << "You got a B!";
    break;
    case a < 100:
        cout << "You got an A!";
    break;
    
    return 0;
    
}
 }

[MikeyBoy]

There's something missing from line 3...

[Lanky]

i wanna die OMG

[Lanky]

Oh um... I fixed it and it still says compilation error

[MikeyBoy]

Lol... I'm guessing most of us here still make that mistake from time to time. Especially those of us who have to switch between languages often.

What error?

EDIT: I'm assuming it's that you have a path through your main function that doesn't return a value?

Look at where you've put your return statement.

Also, I'd strongly advise you to adopt a consistent, sensible indentation style. You would have seem the problem yourself much more easily, if you'd done this.

[JLBorges]

#include <iostream>

int main() {

    std::cout << "what is your grade in percent? ";
    int a ;
    std::cin >> a; // *** note: >>

    if( a < 0 || a > 100 ) std::cout << "invalid input\n" ;
    else if( a < 60 ) std::cout << "You got an F\n";
    else if( a < 70 ) std::cout << "You got a D\n";
    else if( a < 80 ) std::cout << "You got a C\n";
    else if( a < 90 ) std::cout << "You got a B\n";
    else std::cout << "You got an A\n";
}

[Lanky]

Thank You, MikeyBoy for the advice and thanks to you for the code, but i don't need the code I was just doing beginner challenges to get better using this language.