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82. SLang_verror

Synopsis

Signal an error with a message

Usage

void SLang_verror (int code, char *fmt, ...);

Description

The SLang_verror function sets SLang_Error to code if SLang_Error is 0. It also displays the error message implied by the printf variable argument list using fmt as the format.

Example

      FILE *open_file (char *file)
      {
         char *file = "my_file.dat";
         if (NULL == (fp = fopen (file, "w")))
           SLang_verror (SL_INTRINSIC_ERROR, "Unable to open %s", file);
         return fp;
      }

See Also

SLang_vmessage, SLang_exit_error