Path: utzoo!attcan!uunet!husc6!yale!cs.utexas.edu!ut-emx!emx.utexas.edu
From: ezab066@emx.utexas.edu (Albert Wu)
Newsgroups: comp.sys.mac.apps
Subject: THINK C: Prog Work w/ANSI But Not ANSI881
Message-ID: <37733@ut-emx.uucp>
Date: 27 Sep 90 23:55:32 GMT
Sender: ezab066@ut-emx.uucp
Organization: The University of Texas at Austin; Austin, Texas
Lines: 32

I used an SE/30 and tried running the following program with THINK C
4.02.  It worked fine if I linked ANSI but the numbers were not even
read correctly if I linked ANSI881.  The program comes from page 2 of
Narain Gehani's C: An Advanced Introduction.

/* Two dollar calculator */

#include <stdio.h>
#include <stdlib.h>
#define PR putchar(':')

main(void)
{
        float a, b;
        char opr;
        float result;

        while (PR, scanf("%f%c%f", &a, &opr, &b) != EOF ){
                printf ("a=%g; opr=%c; b=%g\n\n", a, opr, b);
               switch (opr) {
                        case '+': result = a + b; break;
                        case '-': result = a - b; break;
                        case '*': result = a * b; break;
                        case '/': result = a / b; break;
                        default:
                                printf ("Error: bad operator\n");
                                exit (EXIT_FAILURE);
                        }
                        printf ("*** %g%c%g = %g\n", a, opr, b, result);
                }
                exit (EXIT_SUCCESS);
}