Test Scores Arrays

[fahmankhan75]

So here I have this void function, which will add the number of students that are within a specific range. The ranges are 1-50,50-100,100-200. Again, the user will enter in all the test scores and then this function will store in the total amount of students within a certain range.

My problem! I'm using this void function in this other void function. I'm getting an error on cout<<"a\n\n\A total of " <<fiftytohundred<< were recorded.. fiftytohundred as an error saying its undefined How do I remedy this issue?

//Function: Will sort out the user scores and place them in to certain ranges. 1-50,50-100,100-200
void scorerangeadder (int score, int &sco_one_to_fifty, int &sco_fifty_to_hundred,int &hundred_to_hundred)
{
	
	if (score>0 || score<=50)
		sco_one_to_fifty++;
	else if (score >50 && score <=100)
		sco_fifty_to_hundred++;
	else if (score >100 && score <=200)
		hundred_to_hundred++;

}

void inputtestscores( int list[],int size, int &studentnumber)
{
	int index=0;
	
	cout<<"\n\n\tUser Input: ";
	for (index=0;index<size;index++)
	{
		cout<<"\n\t\t";
		do
		{
		cin>>list[index];
			if (list[index]<0 || list[index]>200)
				cout<<"\nIncorrect";
		//Call the function: Scorerangeadder to determine the range
		//Declare a variabel to store the scores
			int scores=list[index];
			int onetofifty;
			int fiftytohundred;
			int hundredtohundred;
			scorerangeadder(scores,onetofifty,fiftytohundred,hundredtohundred);
		
		}
		while (list[index]<0 || list[index]>200);
		studentnumber++;
	
	}

	//Output the total number of students within each range
	cout<<"\n\n\A total of " << fiftytohundred << " were recorded in this range. ";

[fahmankhan75]

line 29 is the error line...

[fahmankhan75]

I'm not looking for answers, just looking for a guidance towards the answer. So anyone willing to help please :)

[nvrmnd]

add parenthesis: << fiftytohundred() <<

Edit no wait, i've just read that fiftytohundred() is a void, and you cannot call a void function inside << since it has no return value

[fahmankhan75]

So your saying that void functions will not work inside another void function? only returning value functions would work? correct?

[fahmankhan75]

Just curious, If I can't use that then can you give me a hint of how I can record the total number of students within each range using another void function? I don't want to pile up all of my code uner one function :)

[nvrmnd]

So your saying that void functions will not work inside another void function

void functions will work inside void functions, BUT not inside the << operator :

void inputtestscores( int list[],int size, int &studentnumber)
{

    //-- call fiftytohundred() function :
    fiftytohundred(); // this is perfectly valid, you can call a void function w/in the void function
   //-- but
    cout << fiftytohundred(); // error!! fiftytohundred has NO return value, you cannot call it inside cout <<.
}

can you post your fiftytohundred() function ?

[fahmankhan75]

Shadowfiend I think we have a litte misunderstanding. fiftytohundred is not a function. Its a reference parameter of the function void score range adder. here is my function for this.

//Function: Will sort out the user scores and place them in to certain ranges. 1-50,50-100,100-200
void scorerangeadder (int score, int &sco_one_to_fifty, int &sco_fifty_to_hundred,int &hundred_to_hundred)
{
	
	if (score>0 || score<=50)
		sco_one_to_fifty++;
	else if (score >50 && score <=100)
		sco_fifty_to_hundred++;
	else if (score >100 && score <=200)
		hundred_to_hundred++;

}

[nvrmnd]

oh, sorry, i didn't see that, well your problem is scope issues, the compiler cannot see fiftytohundred because you declared it inside the loops.

Try moving int fiftytohundred outside the do-while and for loop

[fahmankhan75]

I see it now! Thanks for your responses shadowfiend :D