Salem this for u !

This is a discussion on Salem this for u ! within the C Programming forums, part of the General Programming Boards category; Can you please tell me how i can change this line ? newptr->ID = NUM; printf ("%d",NUM); newptr->nextptr=(node*)malloc(sizeof(node)); newptr=newptr->nextptr;...

  1. #1
    Registered User
    Join Date
    Nov 2001
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    8

    Salem this for u !

    Can you please tell me how i can change this line ?


    newptr->ID = NUM;
    printf ("%d",NUM);

    newptr->nextptr=(node*)malloc(sizeof(node));
    newptr=newptr->nextptr;

  2. #2
    and the hat of wrongness Salem's Avatar
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    Like so
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    void traverse(void);
    
    /* Structure for printing the id.txt file */
    struct id_card {
        int ID;
        struct id_card *nextptr;
    };
    
    typedef struct id_card node;
    
    void traverse(void) {
        FILE *fp;
        node *currptr = NULL, *headptr = NULL, *prevptr = NULL;
        int NUM, i;
    
        fp = fopen( "id.txt","r" );
        if ( fp == NULL ) {
            printf( "Unabale to open id.txt file \n" );
            exit( 1 );
        }
    
        for(i = 1; i<=8; i++) {
            NUM = getc( fp );
            NUM = NUM-48;
            currptr = malloc( sizeof(node) );
    
            currptr->ID = NUM;
            currptr->nextptr = NULL;
            printf( "%d",NUM );
    
            if ( headptr == NULL ) {
                /* List is empty - start a new list */
                headptr = currptr;
                prevptr = currptr;
            } else {
                /* append to existing list */
                prevptr->nextptr = currptr;
                prevptr = currptr;
            }
        }
    
        currptr = headptr;
        while ( currptr != NULL ) {
            printf( "\n" );
            printf( "%d", currptr->ID );
            currptr=currptr->nextptr;
        }
    
        fclose( fp );
    }
    
    
    int main( ) {
        traverse();
        return 0;
    }

  3. #3
    Unregistered
    Guest
    Thanx Salem the program looks good, but i have one error on


    Line 28 currptr = malloc( sizeof(node) );

    how can i fix it i have a message saying

    cannot assign 'void near' to 'id_card near*' in function

    any idea how i can sot it out ?

  4. #4
    ATH0 quzah's Avatar
    Join Date
    Oct 2001
    Posts
    14,826
    > cannot assign 'void near' to 'id_card near*' in function

    Update your compiler. It is old. You shouldn't have "near" and "far" pointers. They have been obsoleted by 32bit integers.

    Quzah.
    Hope is the first step on the road to disappointment.

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