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HP OpenVMS Systemsask the wizard |
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The Question is: Hi, i'm trying to build a tool that searches through a file. To do this I would like to use the vscanf function. However I can't seem to locate the function in the DEC(Oops) Compaq CRTL. Is there a reason why these functions are not there? All the v*printf functions seem to be implemeted. Regards Otto The Answer is : As cited in various C FAQs, the vscanf function itself is arguably non-standard and non-portable (prior to C9X/C99), as it is not part of the established C standards. C9X/C99 adds vscanf(), vfscanf(), and vsscanf(). The OpenVMS Wizard is quite certain there is a reason why the vscanf call was not implemented, but not particularly what the reason is -- there are a variety of potential reasons why the call has not yet been made available. (One obvious potential reason would quite clearly involve the claimed level of standards compliance within the particular compiler.) That said, the OpenVMS Wizard is aware that the C99 functions vfscanf, vscanf, and vsscanf (and the wide-character counterparts vfwscanf, vwscanf, and vswscanf) have been added into a version of the Compaq C run-time library (beyond OpenVMS V7.3 and Compaq C V6.4) -- these calls may be available in an ECO kit, and are likely to be available later OpenVMS and compiler (via the backport library) releases.
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