Hi, Shailendra.
I tested your code and I found that:
1) In the functions "void write_data0()", "void write_data1()", "void write_data2()",
"void write_data3()", "void write_data4()", "void write_data5()", "void write_data6()", "void write_data7()", the
conditional statements:
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1;
}
and
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
are incorrect, because the
lines "return 1;" should be "return ;" in these statements.
2) The statements, in the functions "void write_data0()", "void write_data1()", "void write_data2()",
"void write_data3()", "void write_data4()", "void write_data5()", "void write_data6()", "void write_data7()":
"
FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return ; }
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return ; }
"
should be in a different "void" function, because it could reduce the total line numbers of this code with this function.
Best Regards,
Daniel Bruno.
--- Em ter, 6/11/12, shailendra singh
<address@hidden> escreveu:
De: shailendra
singh <address@hidden>
Assunto: Re: New to C, ncurses and a big task assigned.
Para: address@hidden
Data: Terça-feira, 6 de
Novembro de 2012, 15:01
i am including my code with this mail.Its a big code,for a programmer like me who is very new in this field,it quite difficult to optimise it.
I need to do 2 changes in this code.I need to bring the menu in centre of the screen and change the options of second menu.Along with that in the end of the program,when any of the condition selected = 8 or 0 or 1 is right execute the statement and delete theGUI and return a simple console window with output.Also i am unable to execute telnet and localhost command or
any net based command with this.MAy be there is something wrong with fork() and execlp().
#include <curses.h>
#include <stdlib.h>
#include<stdio.h>
#define ENTER 10
#define ESCAPE 27
void init_curses()
{
initscr();
start_color();
init_pair(1,COLOR_WHITE,COLOR_BLUE);
init_pair(2,COLOR_BLUE,COLOR_WHITE);
init_pair(3,COLOR_RED,COLOR_WHITE);
curs_set(0);
//noecho();
keypad(stdscr,TRUE);
}
void draw_menubar(WINDOW *menubar)
{
wbkgd(menubar,COLOR_PAIR(2));
waddstr(menubar,"PARALLEL");
wattron(menubar,COLOR_PAIR(3));
waddstr(menubar,"CON.");
wattroff(menubar,COLOR_PAIR(3));
wmove(menubar,0,20);
waddstr(menubar,"SERIAL");
wattron(menubar,COLOR_PAIR(3));
waddstr(menubar,"CON.");
wattroff(menubar,COLOR_PAIR(3));
}
WINDOW **draw_menu(int start_col)
{
WINDOW **items;
items=(WINDOW **)malloc(9*sizeof(WINDOW *));
items[0]=newwin(10,19,1,start_col);
wbkgd(items[0],COLOR_PAIR(2));
box(items[0],ACS_VLINE,ACS_HLINE);
items[1]=subwin(items[0],1,17,2,start_col+1);
wprintw(items[1],"Shailendra singh",1);
items[2]=subwin(items[0],1,17,3,start_col+1);
wprintw(items[2],"THIVNENT TECH",2);
items[3]=subwin(items[0],1,17,4,start_col+1);
wprintw(items[3],"THINCLIENT",3);
items[4]=subwin(items[0],1,17,5,start_col+1);
wprintw(items[4],"SOLARCOMPUTING",4);
items[5]=subwin(items[0],1,17,6,start_col+1);
wprintw(items[5],"TECHNOCRATS",5);
items[6]=subwin(items[0],1,17,7,start_col+1);
wprintw(items[6],"SENSORS",6);
items[7]=subwin(items[0],1,17,8,start_col+1);
wprintw(items[7],"NCURSESLIB",7);
items[8]=subwin(items[0],1,17,9,start_col+1);
wprintw(items[8],"GCC COMPILER",8);
wbkgd(items[1],COLOR_PAIR(1));
wrefresh(items[0]);
return items;
}
void write_data0()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1; }
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.0 \n", fp);
fputs("Server type = R ",ft);
fclose(ft);
fclose(fp);
}
void write_data1()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1; }
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1;}
fputs("172.16.254.1 \n", fp);
fputs("Server type = T ",ft);
fclose(ft);
fclose(fp);
}
void write_data2()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1;}
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.2 \n", fp);
fputs("Server type = C ",ft);
fclose(ft);
fclose(fp);
}
void write_data3()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1; }
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.3 \n", fp);
fputs("Server type = R ",ft);
fclose(ft);
fclose(fp);
}
void write_data4()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1;}
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.4 \n", fp);
fputs("Server type = T ",ft);
fclose(ft);
fclose(fp);
}
void write_data5()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1; }
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.5 \n", fp);
fputs("Server type = C ", ft);
fclose(ft);
fclose(fp);
}
void write_data6()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1;}
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.6 \n", fp);
fputs("Server type = R ",ft);
fclose(ft);
fclose(fp);
}
void write_data7()
{FILE *fp,*ft;
fp = fopen("file.txt", "w");
ft = fopen("servertype.txt","w");
if(fp == NULL) {fprintf(stderr, "Cannot open \"file.txt\" for appending\n");
return 1; }
if(ft == NULL) {fprintf(stderr, "Cannot open \"servertype.txt\" for appending\n");
return 1; }
fputs("172.16.254.7 \n", fp);
fputs("Server type = T ",ft);
fclose(ft);
fclose(fp);
}
WINDOW **draw_menu1(int start_col)
{
WINDOW **items;
items=(WINDOW **)malloc(9*sizeof(WINDOW *));
items[9]=newwin(10,19,1,start_col);
wbkgd(items[9],COLOR_PAIR(2));
box(items[9],ACS_VLINE,ACS_HLINE);
items[1]=subwin(items[9],1,17,2,start_col+1);
wprintw(items[1],"SHAILENDRA SINGH",1);
items[2]=subwin(items[9],1,17,3,start_col+1);
wprintw(items[2],"thivnent tech",2);
items[3]=subwin(items[9],1,17,4,start_col+1);
wprintw(items[3],"THINCLIENT",3);
items[4]=subwin(items[9],1,17,5,start_col+1);
wprintw(items[4],"SOLARCOMPUTING",4);
items[5]=subwin(items[9],1,17,6,start_col+1);
wprintw(items[5],"TECHNOCRATS",5);
items[6]=subwin(items[9],1,17,7,start_col+1);
wprintw(items[6],"SENSORS",6);
items[7]=subwin(items[9],1,17,8,start_col+1);
wprintw(items[7],"NCURSESLIB",7);
items[8]=subwin(items[9],1,17,9,start_col+1);
wprintw(items[8],"GCC COMPILER",8);
wbkgd(items[1],COLOR_PAIR(1));
wrefresh(items[9]);
return items;
}
void delete_menu(WINDOW **items,int count)
{
int i;
for (i=0;i<count;i++)
delwin(items[i]);
free(items);
}
int scroll_menu(WINDOW **items,int count,int menu_start_col)
{
int key;
int selected=0;
while (1) {
key=getch();
if (key==KEY_DOWN || key==KEY_UP) {
wbkgd(items[selected+1],COLOR_PAIR(2));
wnoutrefresh(items[selected+1]);
if (key==KEY_DOWN) {
selected=(selected+1) % count;
} else {
selected=(selected+count-1) % count;
}
wbkgd(items[selected+1],COLOR_PAIR(1));
wnoutrefresh(items[selected+1]);
doupdate();
} else if (key==KEY_LEFT || key==KEY_RIGHT) {
delete_menu(items,count+1);
touchwin(stdscr);
refresh();
items=draw_menu(20-menu_start_col);
return scroll_menu(items,8,20-menu_start_col);
} else if (key==ESCAPE) {
return -1;
} else if (key==ENTER) {
return selected;
}
}
}
int main()
{
int key;
WINDOW *menubar,*messagebar;
init_curses();
bkgd(COLOR_PAIR(1));
menubar=subwin(stdscr,1,80,0,0);
messagebar=subwin(stdscr,1,79,23,1);
draw_menubar(menubar);
move(2,1);
printw("Press F1 or F2 to open the menus. ");
printw("ESC quits.");
refresh();
do {
int selected_item;
WINDOW **menu_items;
key=getch();
werase(messagebar);
wrefresh(messagebar);
if (key==KEY_F(1)) {
menu_items=draw_menu(0);
selected_item=scroll_menu(menu_items,8,0);
delete_menu(menu_items,9);
if (selected_item<0)
wprintw(messagebar,"You haven't selected any item.");
else if(selected_item==0){
wprintw(messagebar,"You have selected menu SHAILENDRA SINGH.",1);
write_data0();
if(fork())
wait(0);
else
execlp("clear","clear",(char *)NULL);
execlp("ls","ls",(char *)NULL);
execlp("konsole","konsole",(char *)NULL);
ESCAPE;
refresh();
delwin(menubar);
delwin(messagebar);
endwin();
}
else if(selected_item==1){
wprintw(messagebar,"You have selected menu THINVENT TECH.",2);
write_data1();
}
else if(selected_item==2){
wprintw(messagebar,"You have selected menu THINCLIENT.",3);
write_data2();
}
else if(selected_item==3){
wprintw(messagebar,"You have selected menu SOLAR COMPUTING",4);
write_data3();
}
else if(selected_item==4){
wprintw(messagebar,"You have selected menu TECHNOCRATS.",5);
write_data4();
}
else if(selected_item==5){
wprintw(messagebar,"You have selected menu SENSORS.",6);
write_data5();
}
else if(selected_item==6){
wprintw(messagebar,"You have selected menu NCURSESLIB.",7);
write_data6();
}
else if(selected_item==7){
wprintw(messagebar,"You have selected menu GCCCOMPILER.",8);
write_data7();
}
touchwin(stdscr);
refresh();
}
else if (key==KEY_F(2)) {
menu_items=draw_menu1(20);
selected_item=scroll_menu(menu_items,8,20);
delete_menu(menu_items,9);
if (selected_item<0)
wprintw(messagebar,"You haven't selected any item.");
else
wprintw(messagebar,
"You have selected menu item %d.",selected_item+1);
touchwin(stdscr);
refresh();
}}
while (key!=ESCAPE);
delwin(menubar);
delwin(messagebar);
endwin();
return 0;
}
-----Anexo incorporado-----
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