Multiple choice technology security

Is there a vulnerability in this code? If yes, which line(s) int main (int argc, char argv[]){ char chararray[3]; int intarray[3]; int i; strncpy(chararray, argv[1], sizeof(chararray) - 1); for (i=0;i<=3;i++){ /1/ chararray[i]= getchar(); intarray[i]=ii; /2/ } }

Reveal answer Fill a bubble to check yourself

Is there a vulnerability in this code? If yes, which line(s) int main (int argc, char argv[]){ char chararray[3]; int intarray[3]; int i; strncpy(chararray, argv[1], sizeof(chararray) - 1); for (i=0;i<=3;i++){ /*1/ chararray[i]= getchar(); intarray[i]=i*i; /2/ } }