4 int main(int argc, char **argv) {
5 if (argc != 2) xperror("invocation: round <target>", 0);
6 double target = strtod(argv[1], NULL);
8 while (fgets(line, sizeof(line), stdin)) {
9 trim_end(line, "\r\n \t");
11 double n = strtod(line, NULL);
12 double quot = n / target;