GNU Build system helloworld example using autotoolsHEADmaster

1 files changed, 36 insertions, 0 deletions

diff --git a/helloworld.c b/helloworld.c
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+/* helloworld.c: A program to show the time since the Epoch */
+ 
+#include <stdio.h>
+#include "config.h"
+ 
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#else
+#include <time.h>
+#endif
+ 
+double get_sec_since_epoch()
+{
+   double sec;
+ 
+   #ifdef HAVE_GETTIMEOFDAY
+      struct timeval tv;
+ 
+      gettimeofday(&tv, NULL);
+      sec = tv.tv_sec;
+      sec += tv.tv_usec / 1000000.0;
+   #else
+      sec = time(NULL);
+   #endif
+ 
+   return sec;
+}
+ 
+int main(int argc, char* argv[])
+{
+   printf("hello, world! epoch is: ");
+   printf("%f\n", get_sec_since_epoch());
+ 
+   return 0;
+}
+