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#include <stdio.h>int main(){ FILE *input, *output; char bufr[512]; input = fopen("file.in", "r+b"); output = fopen("file.out", "w"); /* set up input stream for minimal disk access, using our own character buffer */ if (setvbuf(input, bufr, _IOFBF, 512) != 0) printf("failed to set up buffer for input file\n"); else printf("buffer set up for input file\n"); /* set up output stream for line buffering using space that will be obtained through an indirect call to malloc */ if (setvbuf(output, NULL, _IOLBF, 132) != 0) printf("failed to set up buffer for output file\n"); else printf("buffer set up for output file\n"); /* perform file I/O here */ /* close files */ fclose(input); fclose(output); return 0;} |
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原文地址：http://www.cnblogs.com/lvdongjie/p/4955894.html
