improper pointer/integer combination: op "=" error

[jthep]

I'm creating an addrecord and a delete record for a linked list below:

int addRecord(struct record **start, char name[], char address[], int yearofbirth, char telno[])
{
    struct record *temp;
    struct record *temp1;
    int added;
 
    temp = *start;
    temp1 = (struct record *)malloc(sizeof(struct record));
    added = 0;
 
    strcpy(temp1 -> name, name);
    strcpy(temp1 -> address, address);
    temp1 -> yearofbirth = yearofbirth;
    strcpy(temp1 -> telno, telno);
    temp1 -> next = NULL;
 
    while(temp -> next != NULL && *start != NULL)
    {
        temp = temp -> next;
    }
......
}

The check in the while loop above for "temp -> next != NULL" passes compilation.

int deleteRecord(struct record **start, char name[])
{
    struct record *current;
    struct record *previous;
    struct record *temp;
    int deleted;
 
    current = *start;
    deleted = 0;
 
    if(*start == NULL)
    {
        return -1;
    }
 
    while(current -> next =! NULL)
    {
......
}

But the check in this while loop throws an error: warning: improper pointer/integer combination: op "="

Here's my struct.

struct record
{
    char            name[25];
    char            address[80];
    int               yearofbirth;
    char            telno[15];
    struct record *next;
};

Can't figure out why =(

[Banfa]

    while(current -> next =! NULL)
 

Should be

    while(current -> next != NULL)
 

Alternitively tell us which line the error occured on.

[jthep]

Urgh, I must have been so frustrated that my eyes must just swept pass that. Thanks...next time I will specify which line.