2/3_int_arith/show-bytes.c


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#include <stdio.h>

typedef unsigned char *byte_pointer;

void show_bytes(byte_pointer start, size_t len) {
    int i;
    for (i = 0; i < len; i++)
        printf(" %.2x", start[i]);
    printf("\n");
}

void show_int(int x) {
    show_bytes((byte_pointer) &x, sizeof(int));
}


void show_float(float x) {
    show_bytes((byte_pointer) &x, sizeof(float));
}


void show_pointer(void *x) {
    show_bytes((byte_pointer) &x, sizeof(void *));
}

void test_show_bytes(int val) {
    int ival = val;
    float fval = (float) ival;
    int *pval = &ival;
    show_int(ival);
    show_float(fval);
    show_pointer(pval);
}