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893天前#include <stdio.h> |
int main(void) |
{ |
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; |
} |
by: 发表于：2017-08-23 16:27:10 顶(0) | 踩(0) 回复
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