1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | #include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
int main(int argc, char* argv[]) {
char const* filename = "write_doubles.c.bin";
// file opened in read mode
// no indicator here its a binary file
FILE* file = fopen(filename, "r");
// figure out size
// nonstandard among binary files, may come up
fseek(file, 0, SEEK_END);
int length_in_bytes = ftell(file);
rewind(file);
int number_of_doubles = length_in_bytes / sizeof(double);
// reading
double* numbers = malloc(sizeof(*numbers) * number_of_doubles);
fread(numbers, sizeof(numbers[0]), number_of_doubles, file);
for (int i = 0; i < number_of_doubles; i++) {
printf("%f\n", numbers[i]);
}
// don't forget to close
fclose(file);
free(numbers);
return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
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