Matching numbers

**kirksson** · 07-21-2008

I have to print out the matching numbers from a text file. I have to rewrite my int lottery function to do the matching part but not sure how.

here is the output:

Sample input file (lottery.txt)
19 12 26 34 5 17
7 5 12 43 5 26
15 19 3 30 27 41
12 12 12 12 12 12
34 12 5 19 17 26

Sample Output
Ticket #1 has 3 matching numbers
Ticket #2 has 0 matching numbers
Ticket #3 has 1 matching numbers
Ticket #4 has 6 matching numbers

Thanks for any input.

**tabstop** · 07-21-2008

I think the matching part was the only part you had right.

scanf("%d \n", readticket) makes no sense whatsoever.

if (lottery==0) means you only print a message if they don't match at all.

You use & when you do scanf, not when you do printf.

**MacGyver** · 07-21-2008

Just to give everyone the satisfaction of how bad this code is:

Code:

#include <stdio.h>

void readticket(FILE* fin, int ticket[]);
int lottery(int ticket[], int winning[]);

int main(void)
{
    FILE *fin;
    int winning[6],ticket[6];
    int i,j;
    fin = fopen("lottery.txt", "r");
    readticket(fin, winning);
    
    for(i=0; i<6;i++)
    {
    printf("&#37;d ", winning[i]);
}

     while(!feof(fin))
     {
       scanf("%d \n",readticket);               //read ticket
       if(lottery==0)               //compare ticket, winning using lottery func
       printf("Ticket# %d has %d matching numbers \n",&ticket,&winning);               //print
     }
    system("PAUSE");
    return 0;
}


void readticket(FILE* fin, int ticket[])
{
     int i;
     for(i=0;i<6;i++)
         fscanf(fin,"%d", &ticket[i]);
     
     }
     
int lottery(int ticket[], int winning[])
{
   {    
        int i;
        int k;
        int count=0;

        for (i=0;i<6;i++)
            for(k=0;k<6;k++)
    
                if (ticket[i]==winning[k])
       
                     count++;
       
       return count; 
}
}

Code:

LotteryTicket.c: In function `main':
LotteryTicket.c:23: warning: int format, different type arg (arg 2)
LotteryTicket.c:23: error: syntax error before '/' token
LotteryTicket.c:27: warning: implicit declaration of function `system'
LotteryTicket.c:11: warning: unused variable `ticket'
LotteryTicket.c:12: warning: unused variable `j'

As tabstop and my compiler both pointed out, your scanf() is wrong. Always fix syntax errors first so you can test the logic itself instead of wasting time with stupid things like this. This will most likely just waste time crashing your program. If your compiler is not spitting out these types of errors, you need to turn the warning level up higher, preferably to max.

Edit: And actually your entire program logic appears bizarre like you mixed and matched totally different strategies.

**kirksson** · 07-21-2008

Your posts are really useless so stop posting replies. If my code is bizzare why in the world you're even bothering to spend your precious time on my code. Get lost before i use my Mr. T line.

**tabstop** · 07-21-2008