#include <stdio.h> #include <string.h> typedef unsigned char byte; void print_hex(const char *string) { unsigned char *p = (unsigned char *) string; for (int i=0; i < strlen(string); ++i) { if (! (i % 16) && i) printf("\n"); printf("0x%02x ", p[i]); } printf("\n\n"); } void float2Bytes(byte bytes_temp[4],float float_variable){ union { float a; byte bytes[4]; } thing; thing.a = float_variable; memcpy(bytes_temp, thing.bytes, 4); } int main() { //char a[10] ="abcdefghi"; //printf("%p\n", a); //printf("%p\n", a+1); //printf("%p\n", a+5); //printf("0x%02x\n", a); //print_hex(a); //printf("%015X\n", 0xa3); float b = 1234.3; byte a[4]; float2Bytes(a, b); printf("%x\n", a[0]); printf("%x\n", a[1]); printf("%x\n", a[2]); printf("%x\n", a[3]); //printf("a=%x\n", b); //printf("a=%x\n", a[0]); //printf("a=%4d\n", b); //printf("a=%2d\n", b); }