subsequent cods fails / doesn't fail depending on the length of lest input

[zach]

locate(5,8);char codeIn[10]; printf("Code");locate(30,8);printf(": ");
            fgets(codeIn, sizeof(codeIn),stdin);
            if ( (p = strchr(codeIn,'\n')) != NULL ) *p = '\0';
        
            strcpy(B.bill, billIn);    
            strcpy(B.date, dateIn);    
                strcpy(B.descr, descrIn);    
                strcpy(B.euros, eurosIn);
            strcpy(B.code, codeIn);

            FILE *C;
            C = fopen("data2","ab");
            fwrite(&B,sizeof(struct A),1,C);
            fclose(C);
            
            locate(6,23);printf("%s %s %s %s %s",billIn, dateIn, descrIn, eurosIn, codeIn);
            locate(6,24);printf("The above has been saved to disk");
                    
            int c;
            printf("Continue y / n : ");
            c = getchar();
    
            if (c == 'y' || c == 'Y') 
            { 
                                                                 //  do something
            }
            else
            {

Depening on the amount of characters during the last data keyed in, the program will skip over the request to enter Y (or N). What to do? Zach K.

[Salem]

Well you have really small buffers for fgets().

So any enthusiastic typing will cause problems.

if ( (p = strchr(codeIn,'\n')) != NULL ) {
  *p = '\0';
} else {
  int ch;
  // burn the rest of the line
  while ( (ch=getchar()) != EOF && ch != '\n' );
}

Similar for your "Continue y / n" thing.
You need to make sure your input reaches a consistent state, not leave a bunch of garbage and a newline to trip something else up.

[flp1969]

To not worry about line size:

char *lineptr;
size_t line_size;

lineptr = NULL;  // NULL means "allocate" getline().
line_size = 0;   // 0 means "allocate" for getline().
if ( getline( &lineptr, &line_size, fstream ) == -1 )
{
  /* error handling */
}

/* Strip \r or \n chars at the end. */
{ char *p; if ( p = strchr( lineptr, "\r\n" ) ) *p = '\0'; }

/* Here lineptr points to newly allocated line. Must free() later. */

getline() is in POSIX.1-2008 standard.

[Structure]

the program will skip over the request to enter Y (or N)

Say what now ?

Can i suggest not using C and c variables ?