that grading program.

[vlad61]

#include <iostream>
using namespace std;

int main()

{
    int score;
    char choice;
do{

    cout<<" *** Grading! ***"<<endl;
    cout<<" Please enter score: ";
    cin>>score;
    if (score==100){
        cout<<" You scored a perfect score! good job. ("<<score<<")";
    }
    if (score>=90 && score<=99){
        cout<<" You got an A! ("<<score<<"%)";
    }
    else if (score>=80 && score<=89){
        cout<<" You got a B! ("<<score<<"%)";
    }
    else if (score>=70 && score<=79){
        cout<<" You got a C! ("<<score<<"%)";
    }
    else if (score>100){
        cout<<" Invalid input, try again";
    }
    else {
        cout<<" Sorry, you failed. ("<<score<<"%)";
    }
    cout<<" Continue grading? (Y/N)";
    cin>>choice;
}while (choice=='y' || choice=='Y');


cin.get();
return 0;

}

so it all seems to work fine except that whenever i try to type in a 100% test score it activates both the 100% if and the else (sorry you failed). not too sure why. i fixed this my self by just making my else an else if and making it make sure that (score>=0 && score<=69) would activate properly but i still would like to know why the else command is acting so shaky?

[tummychow]

Look at line 17. You're missing an else.

[vlad61]

hmmm your right that fixed it, though since it worked doesnt it mean i can use if as many times as i want? or does that make stuff unstable?

[tummychow]

What do you mean by that?
I think you don't understand why it didn't work. You had the initial if, and then you were missing an else, which meant you had started a whole new condition chain. Since 100 didn't satisfy the second condition chain, it was caught by the else clause.

[vlad61]

ooohh
i see what you mean so it works like a chain.... each if code starts another little chain part which affects the outcomes of different elses... i did not know that thanks