print-data.c


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#include <stdio.h>

// Print the "length" data values, starting at addr, as hex values.
void print_data(void *addr, unsigned int length) {
    unsigned char *p = (unsigned char *) addr;
    unsigned int line_chars = 0;

    if (length == 0) length = 16;

    for (; length > 0; p++, length--) {
        line_chars += printf("%02x", (unsigned int) *p);
        if (line_chars > 75) {
            printf("\n");
            line_chars = 0;
        } else {
            printf(" ");
            line_chars++;
        }
    }
    printf("\n");
}


// Trivial test:
// main() {
//     char s[100] = " ACDabcd1asdfjklsajdfklsadjfklsadjfklsajfaklsfjsaklf";
//     print_data(s, 50);
// }