codice:
#include <stdio.h>
#include <string.h>
#include <windows.h>

int main(int argc, char **argv)
{
    char *s, l;
    
    l = strlen(argv[1]);
    if(!l) return EXIT_FAILURE;
    
    s = (char*) malloc((l+8)*sizeof(char));
    
    strcpy(s, "mailto:");
    strcat(s, argv[1]);
    
    ShellExecute(0, "open", s, 0, 0, SW_SHOW);

    return EXIT_SUCCESS;    
}