41 lines
546 B
C
41 lines
546 B
C
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#include <stdio.h>
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#include <sys/stat.h>
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#include <unistd.h>
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int main(void) {
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FILE *fp = fopen("./test/filefp", "r+");
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char buf[1024];
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char *pbuf = fgets(buf, 1024, fp);
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printf("buf: %s\n", buf);
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fseek(fp, 0, SEEK_END);
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fprintf(fp, "num: %d", 123456);
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fpos_t off;
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fgetpos(fp, &off);
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printf("off: %lu\n", off);
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int fd = fileno(fp);
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struct stat st;
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if(fstat(fd, &st) < 0) {
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printf("stat error fd\n");
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return -1;
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}
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printf("dev: %ld\n", st.st_dev);
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fclose(fp);
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close(fd);
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return 0;
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}
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