/*
    Open source version of the program from programming exercise 2 (ICCS/CPS)
   
    This code snippet will show you how values of certain variable types
    are actually stored in memory.

    Warning: use this program on an x86 operating system,
             otherwise your answers could be different.

    This code snippet was written by Wesley Stessens (wesley@ubuntu.com)
    It is released in the Public Domain.
*/
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

int main(int argc, char *argv[]) {
    int i;
    if (argc != 3) {
        printf("=======================================================\n"
               "Usage: %s <type> <value>\n"
               "(Possible types: int, float, double, bool, long, short)\n"
               "=======================================================\n", argv[0]);
    } else {
        if (strcmp(argv[1], "int") == 0) {
            int x = atoi(argv[2]);
            for (i = 0; i < sizeof(int); i++)
                printf("%02X ", *((unsigned char*)&x + i));
            printf("\n");
        } else if (strcmp(argv[1], "float") == 0) {
            float x = atof(argv[2]);
            for (i = 0; i < sizeof(float); i++)
                printf("%02X ", *((unsigned char*)&x + i));
            printf("\n");
        } else if (strcmp(argv[1], "double") == 0) {
            double x = atof(argv[2]);
            for (i = 0; i < sizeof(double); i++)
                printf("%02X ", *((unsigned char*)&x + i));
            printf("\n");
        } else if (strcmp(argv[1], "bool") == 0) {
            bool x;
            if (strcmp(argv[2], "false") == 0 || strcmp(argv[2], "FALSE") == 0 ||
                strcmp(argv[2], "False") == 0 || strcmp(argv[2], "0") == 0)
                x = false;
            else
                x = true;
            for (i = 0; i < sizeof(bool); i++)
                printf("%02X ", *((unsigned char*)&x + i));
            printf("\n");
        } else if (strcmp(argv[1], "long") == 0) {
            long x = atol(argv[2]);
            for (i = 0; i < sizeof(long); i++)
                printf("%02X ", *((unsigned char*)&x + i));
            printf("\n");
        } else if (strcmp(argv[1], "short") == 0) {
            short x = atoi(argv[2]);
            for (i = 0; i < sizeof(short); i++)
                printf("%02X ", *((unsigned char*)&x + i));
            printf("\n");
        } else
            printf("This type is not supported for this exercise.\n");
    }
    return 0;
}