datatypes

Im writing a small sorting program (works so far) but for my next David Blaine stunt/magic trick, I would like it to accept decimal points. Like the typical ignorant newbie I tried to change my array from an int to float and I got quite a few invalid type errors.

Could someone with a lot of patience please break it down for me and simply explain what I need to convert it?

If you need to code, just ask.

Thnx!

If it is possible to get away with....simply make the array a float array. It will accept both int and float variables. Either way you're going to have to truncate the variables to be sorted. However, if you're truncating a float value to an integer value then your results will lose accuracy.

Why not display the code? It would be easier to help that way...

Here ya go

Code:

#include <iostream>

using std::cout;

using std::cin;

#include <stdlib.h>

void number_sort(int array[], int maxnum);



int main(void)
{
    // DECLARE VARIABLES
    
    int maxnum;  // This is how many numbers we will be using
    
    int ToBeSorted;  // Values which will eventually be in ascending order
    
    int Array[100]; // Declare Array with no more than 100 elements
    
    
	
    cout << "How many numbers do you want to sort? ";
    
    cin >> maxnum;
    
    cout << "\nPlease begin entering " << maxnum << " numbers.\n";
    
    ToBeSorted = 1;
    

	// GATHER DATA		
	
		for(ToBeSorted = 1; ToBeSorted < maxnum + 1; ToBeSorted++){  

		    /* 
		    
			Use ToBeSorted as the array subscript and loop until we have all numbers needed (maxnum).
			
			"ToBeSorted" is set to 1 for the first number entered and since we increased ToBeSorted by
			
			one, the same must be done to "maxnum"
			
			*/


       		cout << "\nEnter number " << ToBeSorted << "\n";
       		
       		cin >> Array[ToBeSorted];  // Initialize array with values
       		
       		cout << "\n";
       		   		
       	}
       	
    // DISPLAY
    
        cout << "\n***BEFORE***\n";

		for(ToBeSorted = 1; ToBeSorted < maxnum + 1; ToBeSorted++){
		
			cout << Array[ToBeSorted] << "\n";
			
		}

	// SORTING

		number_sort(Array, maxnum);

	// DISPLAY
	
	    cout << "\n****AFTER****\n";

		for(ToBeSorted = 1; ToBeSorted < maxnum + 1; ToBeSorted++){  
		
			cout << Array[ToBeSorted] << "\n";
			
		}
		
		system("PAUSE");
		return 0;
		
}

void number_sort(int Array[], int maxnum)
{
    
    int ToBeSorted;  // Values which will eventually be in ascending order
    
    int Copied; // If value is < than ToBeSorted Value then copy value to Storage
    
    int Storage;  // This holds values temp until copy is complete
    

    for(ToBeSorted = 1; ToBeSorted < maxnum + 1; ToBeSorted++){  // Pass through each element in the array

        for(Copied = ToBeSorted+1; Copied < maxnum + 1; Copied++){  // Loop again and move values if needed

            if(Array[ToBeSorted] > Array[Copied]){  // if ToBeSorted(1) is greater than Copied(2) then do next 3 lines
				
					Storage = Array[ToBeSorted];  // Move ToBeSorted into temp Storage
					
					Array[ToBeSorted] = Array[Copied]; // Move the smaller number from Copied to the ToBeSorted array
					
					Array[Copied] = Storage; // Now copy the original value we got from ToBeStored (now in Storage) to the Copied array
            }
        }
    }  
}

Use a double.
Floats need to be prefixed with an 'f' when declared, although if you don't, some compilers just convert it to double.

Ok I changed the ints to double except for maxnum which will always be a whole number. All others which could possibly have a decimal was changed to double. Now Im getting errors similar to when I tried float, which are:

invalid types `double[100][double]' for array subscript
invalid types `double *[double]' for array subscript

any suggestions are appreciated.
Thanks again!

Here we go
hints :

• I changed the variable ToBeStored into the variable counter
• ur program didnt work coz u tried to do this : Array[ToBeStored]---->while ToBeStored is double
• I prefered to initilze counter to 0 as array sort begin through 0,1,2,,..... 9this wasnt neccessary
• this program accept decimals and int and compined list of noumbers

hope it ll help u

Code:

#include <iostream>

using std::cout;

using std::cin;

#include <stdlib.h>

void number_sort(double array[], int maxnum);



int main(void)
{
    // DECLARE VARIABLES
    
    int maxnum;  // This is how many numbers we will be using
    
    double ToBeSorted;  // Values which will eventually be in ascending order
    
    double Array[100]; // Declare Array with no more than 100 elements
    
    
	
    cout << "How many numbers do you want to sort? ";
    
    cin >> maxnum;
    
    cout << "\nPlease begin entering " << maxnum << " numbers.\n";
    
    //ToBeSorted = 1;    useless line !!!!!
    

	// GATHER DATA		
	
		for(int counter = 0; counter < maxnum ; counter++){

		    /* 
		    
			Use ToBeSorted as the array subscript and loop until we have all numbers needed (maxnum).
			
			"ToBeSorted" is set to 1 for the first number entered and since we increased ToBeSorted by
			
			one, the same must be done to "maxnum"
			
			*/


       		cout << "\nEnter number " <<(counter+1) << "\n";
       		
       		cin >> Array[counter];  // Initialize array with values
       		
       		cout << "\n";
       		   		
       	}
       	
    // DISPLAY
    
        cout << "\n***BEFORE***\n";

		for(int counter = 0; counter < maxnum ; counter++){
		
			cout << Array[counter] << "\n";
			
		}

	// SORTING

		number_sort(Array, maxnum);

	// DISPLAY
	
	    cout << "\n****AFTER****\n";

		for(int counter = 0; counter < maxnum ; counter++){
		
			cout << Array[counter] << "\n";
			
		}
		
		system("PAUSE");
		return 0;
		
}

void number_sort(double Array[], int maxnum)
{
    
    double ToBeSorted;  // Values which will eventually be in ascending order
    
    int Copied; // If value is < than ToBeSorted Value then copy value to Storage
    
    double Storage;  // This holds values temp until copy is complete
    

    for(int counter = 0; counter < maxnum; counter++){  // Pass through each element in the array

        for(Copied = counter+1; Copied < maxnum ; Copied++){  // Loop again and move values if needed

            if(Array[counter] > Array[Copied]){  // if ToBeSorted(1) is greater than Copied(2) then do next 3 lines
				
					Storage = Array[counter];  // Move ToBeSorted into temp Storage
					
					Array[counter] = Array[Copied]; // Move the smaller number from Copied to the ToBeSorted array
					
					Array[Copied] = Storage; // Now copy the original value we got from ToBeStored (now in Storage) to the Copied array
            }
        }
    }  
}

Uh, sorry, I didn't read your code, just looked at the question. Array subscripts have to be integral values, i.e. an int. I believe char could be used as well, but have never seen that in C++, only Delphi. But you wouldn't use a float for a subscript, either.

hey, thanks for helping me out.. I dont fully understand everything thats happening yet but thats how I learn. Now its time for me to pull it apart, and figure it out for myself!

YDM!
Rye