Program arg and environment dumper

dumpvpe.c

#include <stdio.h>
#include <assert.h>
#include <string.h>

extern char **environ;

char *get_env_end() {
    char *env_end = NULL;
    char *prev_end = NULL;
    int i = 0;
    do {
        prev_end = env_end;
        env_end = environ[i++];
    } while(env_end != NULL);
    return prev_end + strlen(prev_end);
}

int main(int argc, char *argv[]) {
    fwrite(&argv[0][0], sizeof(char), get_env_end() - &argv[0][0], stdout);
}