inserting into linked list

This is a discussion on inserting into linked list within the C Programming forums, part of the General Programming Boards category; Alright, so I know that I'm supposed to use strcpy for strings, but I just can't get it to work. ...

  1. #1
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    inserting into linked list

    Alright, so I know that I'm supposed to use strcpy for strings, but I just can't get it to work. The program will just crash after entering the first bit of information. Here is the code I have for the insert function:


    Code:
    void insert(struct vehicle** head, char* make, char* model, int year, char* color, char* license)
    {
        struct vehicle* newvehicle;
        struct vehicle* crnt = (*head);
        
        newvehicle = malloc(sizeof(struct vehicle));
        newvehicle->make = make;
        newvehicle->model = model;
        newvehicle->year = year;
        newvehicle->color = color;
        newvehicle->license = license;
        
        
        
        
        if ((*head) == NULL || (*head)->license > license)
        {
            strcpy((*head),newvehicle->next);
            strcpy(newvehicle,(*head));
            return;
        }
        
        while(crnt->next != NULL && crnt->next->license < license)
        {
            strcpy(crnt->next, crnt);
        }
        
        strcpy(crnt->next,newvehicle->next);
        strcpy(newvehicle,crnt->next);
    }
    My intro teacher never went over strcpy or strcmp at all, so I really don't know how to use them.

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    So, are you and vidioholic and SkidMarkz the same person or what? (If not, you should check their recent posts.)

  3. #3
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    No, we're not the same person, but it does seem like we're in the same class. lol

    Even so, looking at theie code does not really help with my issues on inserting into a list...
    Last edited by MiroMage; 09-16-2008 at 11:18 AM.

  4. #4
    and the Hat of Guessing tabstop's Avatar
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    You would need to strcpy the license over. I don't know what you're trying to do with all the other strcpy's.

  5. #5
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    Remember to allocate memory for all of your strings before using strcpy

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