#include <stdio.h>
#include <stdlib.h>

void walk() {
    int pos = 0;
    int steps = 100;

    FILE *rand_stream = fopen("/dev/urandom", "r");

    for (int i=0; i<steps; i++) {
	int x = fgetc(rand_stream);
	pos += x < 127 ? -1 : 1;
    }

    fclose(rand_stream);

    printf("Steps taken: %d\n", steps);
    printf("End position: %d\n", pos);
}

int main() {
    walk();
}