#if defined(_WIN32)# include <windows.h>#else# include <unistd.h>#endif/* sleeps for 4n seconds, where n is the argument to the program */intmain(int argc,char** argv){int time;if(argc >1){
time =4*atoi(argv[1]);}#if defined(_WIN32)Sleep(time *1000);#elsesleep(time);#endifreturn0;}