3. Pressing the key  3  will lead to the C sub-menu allowing writing, compiling, 
running and editing programs in C language. 
.3. 
< C > 
 
F 0 1 2 3 4 5 6 7 8 9     51113B 
F1>Run/Load/Source 
You can use the       cursor keys to select the program area 0 - 9 
The  S  key allows to start writing the source code with the editor. 
.S. 
Note that the C language is case sensitive. Key words have to be written in lower 
case characters only. Make sure the CAPS symbol is switched OFF before entering 
a keyword. 
.M   A   I   N   (   )  Shift  {  . . 
SPC .P   R   I   N   T   F   (   “  CAPS  H   E   L   L   O  Shift ¥  CAPS  N   ”  .). 
.;. . . 
main(){↵ 
 printf(“HELLO¥n”);↵ 
. 
                       <     3> 
 printf(“HELLO¥n”);↵ 
}↵ 
. 
                       <     4> 
This gives the following C program: 
main(){ 
 printf(“HELLO¥n”); 
} 
6.2.3  Using the Editor 
The editor of the computer is used for creating and editing programs, as we saw with 
our HELLO program. This section takes you further along the path of using the editor 
effectively to create and edit useful C programs. 
 
Entering the editor 
You can enter the editor either from the MENU mode (by pressing  3  for the C 
mode, and the  S  for the editor), or from the interpreter (by entering the EDIT 
command).