摘要：原文链接：http://www.cnblogs.com/nwf5d/archive/2011/06/03/2071247.html#ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> #include <stdlib.h> #include <sys/time.h> int main(int argc, char *argv[]) { printf("Hello, world!\n"); struct timeval tvafter,tvpre; 阅读全文