https://github.com/xuchunyang/eval

evaluate algebraic string
https://github.com/xuchunyang/eval

Last synced: about 1 month ago
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evaluate algebraic string

• Host: GitHub
• URL: https://github.com/xuchunyang/eval
• Owner: xuchunyang
• Created: 2014-06-05T06:27:44.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2015-06-07T18:05:26.000Z (over 9 years ago)
• Last Synced: 2024-10-16T01:46:12.594Z (3 months ago)
• Language: C
• Homepage:
• Size: 188 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## Evaluate infix expression with C

### Usage

For example, to evaluate "9+(3-1)*3+1.5/0.5":

```c

#include "eval-suffix-expr.h"

char expr[] = "9+(3-1)*3+1.5/0.5";

CAL_ERROR cal_error = {.code = 0, .message = ""};

double rtv = 0.0;

rtv = eval_suffix_expr(expr, &cal_error);

if (cal_error.code != 0)      /* Error occurs! */

  {

    fprintf (stderr, "%s", cal_error.message);

  }

else

  {

    printf ("The result of %s is %f\n", expr, rtv);

  }

```

### TODO

- [x] handle exceptions like divison by zero

- [-] clean unnecessary functions