$//$ Program Grade prints appropriate message based on a

$//$ grade read from the keyboard.

#include

using namespace std;

int main$()$

$\{$

int grade;

cout $<<$ "Enter an integer grade between $50$ and $100."$

$<<"$ Press return. $"<<$ endl;

cin $>>$ grade;

if $(/*$ FILL IN Logical Expression $*/)$

cout $<<$ "congratulations!$<<$ endl;

return $0$;

$\}$

Exercise $1.(5$ pts$)$

Fill in the logical expression beside the if so that $$Congratulations$!$ is written if the numeric grade is

greater than or equal to $80.$ Run the program three times entering the following values for grade: $60,$

$80$ and $95.$ Show your expression and the results for the three grades in the report.