#include #include #include "complex.h" #include "fractal.h" static void usage(char *); void main(int argc, char*argv[]) { if(argc != 3) usage(argv[0]); display_square(atoi(argv[1]),atoi(argv[2])); exit(0); } void usage(char *com) { fprintf(stderr,"usage : %s \n",com); exit(1); }