if-else if, What am I doing wrong here?

[killingthemonkey]

This should be one of the easiest things I do. I look at other people's code, and everything looks like it should be right. It just will not work.

My code:

------------------------------------
#include <iostream>
using namespace std;

int main()
{

int grade;
cout << "Enter your grade: ";
cin >> grade;

if (grade = 100)
cout << "Curvebuster!" << endl;
else if (grade >= 90)
cout << "You got an A!" << endl;
else if (grade >= 80)
cout << "You got a B." << endl;
else if (grade >= 70)
cout << "You got a C. Could have done better." << endl;
else if (grade >= 60)
cout << "You got a D. Shop class is that way." << endl;
else if (grade >= 0)
cout << "The short bus is this way." << endl;
else
cout << "Pease enter a valid grade." << endl;

return 0;

}

-------------------------------------

Code I am comparing to:

-------------------------------------
#include <iostream>
using namespace std;

int main(void)
{
int testScore;
cout << "Enter your test score: ";
cin >> testScore;

if (testScore >= 90 )
cout << "Your grade is an A" << endl;
else if (testScore >= 80 )
cout << "Your grade is a B" << endl;
else if (testScore >= 70 )
cout << "Your grade is a C" << endl;
else if (testScore >= 60 )
cout << "Your grade is a D" << endl;
else
cout << "Your grade is an F" << endl;
return 0;
}
-------------------------------------------

The second code works. My code always gives me the output from the if statement. It never changes. Help, please.

[oghmaosiris]

In your if statement you're initializing grade to alwasy be 100.

your if should be if (grade==100)

[tummychow]

It's double equals. == is the equality operator. It evaluates to true if its operands are the same. single equals (=) is the assignment operator. It returns the value of its left operand and therefore it is NOT a logical test.

[killingthemonkey]

Thanks, guys! I knew I was brain freezing on something simple.

[Pmishra]

#include <iostream>
using namespace std;

int main(void)
{
int testScore;
cout << "Enter your test score: ";
cin >> testScore;

if (testScore >= 90 )
cout << "Your grade is an A" << endl;
else if (testScore >= 80 )
cout << "Your grade is a B" << endl;
else if (testScore >= 70 )
cout << "Your grade is a C" << endl;
else if (testScore >= 60 )
cout << "Your grade is a D" << endl;
else
cout << "Your grade is an F" << endl;
return 0;
}

dude dut this doesn't satify the condition for score above 100 or below 0. there should be conditions that even checks it and shows that the entered grade is invalid.

#include <iostream>
using namespace std;
int main()
{

int grade;
cout << "Enter your grade: ";
cin >> grade;

if (grade > 100)
cout << "Pease enter a valid grade." << endl;
else if (grade>90)
cout << "Curvebuster!" << endl;
else if (grade >= 90)
cout << "You got an A!" << endl;
else if (grade >= 80)
cout << "You got a B." << endl;
else if (grade >= 70)
cout << "You got a C. Could have done better." << endl;
else if (grade >= 60)
cout << "You got a D. Shop class is that way." << endl;
else if (grade >= 0)
cout << "The short bus is this way." << endl;
else
cout << "Pease enter a valid grade." << endl;
system("pause");
return 0;

}
this shows the perfect result as al the conditions are included in it!

[oghmaosiris]

You can have a score over 100 if there was extra credit.

You can't have a score under 0, tho.

[tummychow]

You could quite possibly. Take those tests where wrongs are -marks. (Cdn math contests are that way). You would have to screw up bigtime, but it is possible.
And stop bolding the code. There are code tags for that.

[killingthemonkey]

I'm going to go back and add in the logic for greater than 100 and less than 0. Also, i'm going to loop it with a letter or word as an exit condition. I just needed to figure out what I was doing wrong there. I was staring at the iff, but wasn't looking at my condition.