25 lines
564 B
C
25 lines
564 B
C
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// Program demonstrating strange effects of mixing C std and Unix
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// system I/O. Typical output is
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//
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// FIRST: 1
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// NEXT: 41 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
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//
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// which is explainable with internal buffering of C std I/O
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#include <stdio.h>
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#include <unistd.h>
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int main(int argc, char *argv[]){
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FILE *input = fopen("3K.txt","r");
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int first;
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fscanf(input, "%d", &first);
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printf("FIRST: %d\n",first);
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int fd = fileno(input);
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char *buf[64];
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read(fd, buf, 63);
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buf[127] = '\0';
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printf("NEXT: %s\n",buf);
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return 0;
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}
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