//vuln.c
 #include <stdio.h>
 #include <string.h>
 int main(int argc, char **argv) {
 // Make some stack information
 char a[100], b[100], c[100], d[100];
 // Call the exploitable function
 exploitable(argv[1]);
// Return everything is OK
 return(0); }

 int exploitable(char *arg) {
 // Make some stack space
 char buffer[10];
 // Now copy the buffer
 strcpy(buffer, arg);
 printf("The buffer says .. [%s/%p].\n", buffer, &buffer);
 // Return everything fun
return(0); }