NOTE: in mathematics, the square root of a negative number is not real; in C++ therefore, passing such a value to the square root function is an error. Given a double variable named areaOfSquare write the necessary code to read in a value , the area of some square, into areaOfSquare and print out the length of the side of that square. HOWEVER: if any value read in is not valid input, just print the message “INVALID”.

LANGUAGE: C++

CHALLENGE:

NOTE: in mathematics, the square root of a negative number is not real; in C++ therefore, passing such a value to the square root function is an error. Given a double variable named areaOfSquare write the necessary code to read in a value , the area of some square, into areaOfSquare and print out the length of the side of that square. HOWEVER: if any value read in is not valid input, just print the message “INVALID”.

SOLUTION:

cin >> areaOfSquare;

if(areaOfSquare >= 0){
    double length = sqrt(areaOfSquare);
    cout << length;
}else{
    cout << "INVALID";
}