#include #include double roundf(double n) { return floor(n + 0.5); } int roundi(double n) { return n+0.5; } void usage(void) { fprint(2, "usage: %s number\n", argv0); exits("usage"); } void main(int argc, char *argv[]) { double n; ARGBEGIN{ default: usage(); }ARGEND; if(argc != 1) usage(); n = strtod(argv[0], nil); print("%g\n", roundf(n)); print("%d\n", roundi(n)); exits(0); }