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Full Discussion: does any one know how to solve?
Top Forums Programming does any one know how to solve? Post 302227569 by shamrock on Thursday 21st of August 2008 01:11:08 PM
Old 08-21-2008
Quote:
Originally Posted by mlhazan
Do you know why for loop does not work?
Don't need a for loop to go through all the record entries...when EOF is reached fread() returns zero for the number of items read and that can be used as a terminal condition.
You don't need to initialize a 1000 element employee[] array when you will be using only a few elements of it. The size of the employee[] array is known completely at compile time using the sizeof operator after the employee[] array has been initialized. See source changes highlighted in red.
Code:
#include <stdio.h>
#include <stdlib.h>

struct date
{
    int month;
    int day;
    int year;
};
struct empRec
{
    char name[25];
    char room[10];
    int jobLevel;
    struct date startDate;
};

int main()
{
    int entries;        /* number of employee records */
    FILE *data;
    static struct empRec employee[] =
    {
        {"Peter North","4B-208",35400,{10,11,1983}},
        {"John Musa","2B-118",25400,{07,10,1993}},
        {"Paula Jeminova","1A-506",18700,{02,1,1990}},
        {"Patricia Silver","6C-123",52100,{14,21,2000}},
        {"Robert mill","4D-318",42100,{01,19,2008}}
    };

    struct empRec employee2;
    entries = (sizeof employee / sizeof employee[0]);

    if ((data = fopen("database","w+")) == NULL) {
        fprintf(stderr,"Can't Create database\n");
        exit(1);
    }
    if (fwrite(&employee,sizeof(struct empRec), entries, data) != entries) {
        fprintf(stderr,"WRITE ERROR\n");
        exit(1);
    }
    rewind(data);

    /* Replace for loop with the while loop below */
    while(fread(&employee2,sizeof(struct empRec), 1, data) == 1)
        printf("%s %s %d %d %d %d\n", employee2.name, employee2.room, employee2.jobLevel,
            employee2.startDate.month, employee2.startDate.day, employee2.startDate.year);

    fclose(data);
    printf("Created database\n");
    exit(0);
}

Last edited by shamrock; 08-21-2008 at 02:23 PM..
 

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LEARN ABOUT V7

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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