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Annotation of 42BSD/ingres/doc/other/equeldemo.q, revision 1.1.1.1

1.1       root        1: /*
                      2: *  This is a sample EQUEL program. It assumes the
                      3: *  presence of the EMPLOYEE relation inside the
                      4: *  DEMO data base. To use the program, type an
                      5: *  employee name and the program will either respond
                      6: *  with the SALARY or with the message that
                      7: *  the employee is not in the data base.
                      8: *  Typing a '?' will result in the list of
                      9: *  all names in the data base being printed.
                     10: *
                     11: *  Exit by typing a control-d
                     12: *
                     13: *  To compile and run this program do the following:
                     14: *
                     15: *  equel equeldemo.q
                     16: *  cc    equeldemo.c -lq
                     17: *  a.out
                     18: */
                     19: main()
                     20: {
                     21: ##     char    NAME[20];
                     22: ##     int     SAL;
                     23:        char    flag;
                     24: 
                     25: ##     ingres demo
                     26: ##     range of e is employee
                     27:        while (eread(NAME))
                     28:        {
                     29:                if(NAME[0] == '?')
                     30:                {
                     31: ##                     retrieve (NAME=e.name)
                     32: ##                     {
                     33:                                printf("%s\n",NAME);
                     34: ##                     }
                     35:                        continue;
                     36:                }
                     37:                flag = 0;
                     38: ##             retrieve (SAL = e.salary) where
                     39: ##             e.name = NAME
                     40: ##             {
                     41:                        printf("The salary of %s is %d\n",NAME,SAL);
                     42:                        flag = 1;
                     43: ##             }
                     44:        if(!flag) printf("%s is not in the data base\n",NAME);
                     45:        }
                     46: ##     exit
                     47: }
                     48: 
                     49: eread(p)
                     50: char   *p;
                     51: {
                     52:        char    c;
                     53:        printf("enter name:");
                     54:        while(c = getchar())
                     55:        {
                     56:                if(c == '\n')
                     57:                {
                     58:                        *p = 0;
                     59:                        return(1);
                     60:                }
                     61:                *p++ = c;
                     62:        }
                     63:        return(0);
                     64: }

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