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Old 07-03-2004, 03:46 AM   #1 (permalink)
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Location: Rotterdam
[C] problem with qsort

For school i have to write code for a embedded system (msp430) wich has to do 2 kinds of sorting.
1st one is a function written by myself called: eigen functie.
2nd one is a qsort function.
One of the 2 functios can be selected by putting eigen funtie or qsort as comment, see the red text.

Now comes the problem when i set eigen funtie as comment, so i want to execute the qsort. I get a strange error: Function argument number mismatch.

Doe anyone know how to solve this?

Thanks in advance.
Here is the code:


#include <msp430x11x1.h>
#include <stdio.h>

#define size 10

// Function prototypes

void eigen_functie(int invoer[]);
void qsort(int invoer[], int links, int rechts);
void swap(int invoer[], int i, int j);
void main(void)
{
int invoer[size] = {69,51,59,55,38,26,21,63,34,84};

WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P2DIR |= BIT4; // Set P2.3 as output

P2OUT |= BIT4; // Set BIT3 (LEDS Off)

TACTL = TASSEL0 + TACLR; // Timer A clock is ACLK + clear
TACTL |= MC1; // Timer A in Continous mode


//eigen_functie(invoer);
qsort(invoer);


TACTL = MC_0;
P2OUT &= ~BIT4; // Clear BIT3 (LEDS On)

}


///////////////////////////////////////////////////////////////
// eigen_functie
///////////////////////////////////////////////////////////////

void eigen_functie(int invoer[])
{
int x,y,aantal; //Declaraties.
int uitvoer[size];

for(x=0;x<size;x++)
{
aantal = 0;
for(y=0;y<size;y++)
{
if (invoer[y]<invoer[x])
{
aantal++;
}
}

uitvoer[aantal]=invoer[x];
}

for(x=0;x<size;x++)
{
invoer[x] = uitvoer[x];
}
}


///////////////////////////////////////////////////////////////
// qsort
///////////////////////////////////////////////////////////////

void qsort(int invoer[], int links, int rechts)
{
int i, laatste;

void swap(int invoer[],int i, int j);

if (links >= rechts) //Doe niets als in dearray minder dan twee elementen staan.
return;
swap(invoer, links, (links + rechts)/2); //Verplaats partitie-element naar invoer[0].
laatste = links;
for(i = links+1; i <= rechts; i++) //Partitie.
if (invoer[i] < invoer[links])
swap(invoer, ++laatste, i);
swap(invoer, links, laatste); //Zet partitie-element terug.
qsort(invoer, links, laatste-1);
qsort(invoer, laatste+1, rechts);

}

void swap(int invoer[], int i, int j) //Swap functie.
{
int temp;

temp = invoer[i];
invoer[i] = invoer[j];
invoer[j] = temp;
}
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Old 07-03-2004, 04:13 AM   #2 (permalink)
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Location: Netherlands
Nou... zo erg vreemd is het niet... qsort is een functie met 3 parameters en eigen_functie heeft er maar 1.

Je zou bij qsort dan ook een links en een rechts mee moeten geven.

For the english ppl: Don't you just hate it when people with another language reply to eachother in their own language and you can't understand a word?
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Last edited by RelaX; 07-03-2004 at 05:14 AM..
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Old 07-03-2004, 05:50 AM   #3 (permalink)
Psycho
 
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Location: Rotterdam
Great, after putting links and rechts in the qsort function. I only had to declare links and rechts and it worked!

Here is the modified code:

// Function prototypes
int links;
int rechts;
void eigen_functie(int invoer[]);
void qsort(int invoer[], int links, int rechts);
void swap(int invoer[], int i, int j);
void main(void)
{
int invoer[size] = {69,51,59,55,38,26,21,63,34,84};


WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P2DIR |= BIT3; // Set P2.3 as output

P2OUT |= BIT3; // Set BIT3 (LEDS Off)

TACTL = TASSEL0 + TACLR; // Timer A clock is ACLK + clear
TACTL |= MC1; // Timer A in Continous mode


//eigen_functie(invoer);
qsort(invoer,links,rechts);


TACTL = MC_0;
P2OUT &= ~BIT3; // Clear BIT3 (LEDS On)

}

Reuze bedankt! = Thank you verry much
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