PROGRAM 1


#                     program name:  myscript
#                     student name:  anthony f. ortiz
#                     assignment #:  1
#                            class:  cs3560
#                          quarter:  spring 97
#           date program completed:  4/15/97
#            date program compiled:  4/15/97
#  version of compiler/interpreter:  csuh c compiler for cutcol
#
#      this script prompts the user to input a single character abbreviation
#  for the desired terminal and or emulator being used.  if the response is an
#  h then my script will print help in the form of a list of terminal types
#  and letter abbreviations on the crt.  if the reponse is not a legal
#  terminal type abbreviation then the program displays "terminal type
#  unknown, try again" and allows the user to reinput a letter.  if the
#  response is a legal terminal abbreviation, then the program prints a
#  message "terminal now set to "terminal" with public write permission off"
#  and sets the term variable in the shell.
set done = "t"
while ($done == "t")
    echo -n "terminal (h = help): "
    set termtype = $< 
    if ($termtype == "h") then    
        cutcol 1 29 myout
 *  will take "myfile" as the input stream and extract columns 12-34
 *  to a file called myout.
 */

#include 

main( argc,argv,envp)
int argc;
char *argv[], *envp[];
{
    int  number_left, number_right, count;
    int  ch=0;

    if(argc<=2) 
    {   /*  if user forgets usage, then the template is provided.  */
        printf ("\nUsage %s  \n",argv[0]);
        exit();
    }

    number_left =atoi(&argv[1][0]); /*  atoi convert string to integer.  */
    number_right=atoi(&argv[2][0]);

    if (number_left >= number_right || number_left<1 || number_right<1) 
    {
        printf ("invalid values\n");
        exit();
    }
 
    while (ch!=EOF)
    { 
        /*  do while not end of file (^D from terminal).  */
        /*  first run up to the left column (eat the characters).  */
        for(count=1; 
            count<=number_left && (ch=getchar())!='\n' && ch!=EOF; 
        count++);
        if (ch!='\n' && ch!=EOF) 
        {
            putchar(ch); /*  now print up to and including the right column.  */
            for( ; count<=number_right && (ch=getchar())!='\n' && ch!=EOF; count++)
                putchar(ch);
            if (ch!='\n' && ch!=EOF) /*  eat rest of line.  */
                while ((ch=getchar())!='\n' && ch!=EOF);
        }
        putchar('\n');
    } /*  end while.  */ 
} /*  end of main.  */

#  outfile:  prog1.out

h

terminal (h = help): 




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