28 строки
700 B
C
28 строки
700 B
C
#include <stdio.h>
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#include <sys/mman.h>
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#include <emscripten.h>
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#include <string.h>
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#include <assert.h>
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int main() {
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printf("*\n");
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FILE *f = fopen("data.dat", "r");
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char *m;
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m = (char*)mmap(NULL, 9000, PROT_READ, MAP_PRIVATE, fileno(f), 0);
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for (int i = 0; i < 20; i++) putchar(m[i]);
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assert(!strncmp(m, "data from the file .", 20));
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munmap(m, 9000);
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printf("\n");
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m = (char*)mmap(NULL, 9000, PROT_READ, MAP_PRIVATE, fileno(f), 5);
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for (int i = 0; i < 20; i++) putchar(m[i]);
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assert(!strncmp(m, "from the file ......", 20));
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munmap(m, 9000);
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printf("\n*\n");
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#ifdef REPORT_RESULT
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int result = 1;
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REPORT_RESULT();
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#endif
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return 0;
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}
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