Question

How to initialize an array with a list of values from text file using #include in C

Answer 1

#include <stdio.h>

#define SIZE 10
#define ASIZE(x) (sizeof (x) / sizeof (*x))

int main(int argc, char **argv)
{
    double array[] = {
		#include "float_numbers.txt"
		};
	for (int i = 0; i < ASIZE(array); i++)
		printf("%2.3f\n", array[i]);
		
    return 0;
}

/*
float_numbers.txt
-----------------
3.14,
2.34,
5.238,
98.23,
17.22

*/

/*
run:

3.140
2.340
5.238
98.230
17.220

*/

 

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