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 | #include <stdio.h>
#include <stdlib.h>
#define log_int(x) printf("%s == %d\n", #x, (x))
#define log_float(x) printf("%s == %.060f\n", #x, (x))
#define log_double(x) printf("%s == %.060lf\n", #x, (x))
#define log_str(x) printf("%s == \"%s\"\n", #x, (x))
typedef struct {
union {
int as_int;
float as_float;
};
enum { NUMBER_INT = 1, NUMBER_FLOAT } type;
} Number;
int main(int argc, char* argv[]) {
Number n1 = { .as_int = 8 , .type = NUMBER_INT };
if(n1.type == NUMBER_INT) {
printf("%d\n", n1.as_int);
}
return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
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