whats wrong with this program

Question

#include <iostream> 
using namespace std;

int main () 
{
    double testscore;
    cout << " Enter your test score and i will tell you the letter grade you earned ";
    cin >> testscore;
    switch (testscore)
    {
        case (testscore < 60.0):
            cout << "your grade is F.\n";
            break;
        default:
            cout << "that score isnt valid\n.";
    }
return 0;
}

Answer 1

You can only use switch with integer types. Change your switch to an if.

(and you're missing the closing switch brace.)

Answer 2

You haven't closed the switch statement block.

Answer 3

There's several problems:

• You're missing a closing brace } at the end of main(). Not sure if that was intentional, or a cut-and-paste error.

• The return is inside the switch statement, which means the non-default case will not return the function. Since the function returns an int, this will result in a compilation error.

• You cannot switch on expressions like that. Use an if statement instead.

Answer 4

You cannot have an expression in case.

Answer 5

You don't allow anyone to pass the class.

Answer 6

Some syntax errors and the main point that switch in C can only be used for integer and bool stuff.

#include <iostream> 
using namespace std;

int main () 
{
    double testscore;
    cout << " Enter your test score and i will tell you the letter grade you earned ";
    cin >> testscore;
    if (testscore < 60.0) {
            cout << "your grade is F.\n";
    }
    else {
      cout << "that score isnt valid\n.";
    }

    return 0;
}

Answer 7

switch expects integer expression in the parenthesis which is not the case in your program. Also each case should be integer or constant character expression.