Add simple_time.c app

diff --git a/simple_time.c b/simple_time.c
new file mode 100644 (file)
index 0000000..eea422f
--- /dev/null
+++ b/simple_time.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+/* Prints a time on a single line of the console.
+ * I wrote this app so that I could measure times by repeatedly pressing
+ * return.
+ *
+ * Colin McCabe
+ */
+void strip_newlines(char *str)
+{
+       size_t i;
+       size_t str_len = strlen(str);
+
+       for (i = 0; i < str_len; i++) {
+               if (str[i] == '\n')
+                       str[i] = ' ';
+       }
+}
+
+int main(void)
+{
+       while (1) {
+               char str[27];
+               size_t i, len;
+               time_t t = time(NULL);
+               struct tm *tm = localtime(&t);
+
+               str[0] = '\0';
+               asctime_r(tm, str);
+               len = strlen(str);
+               printf("\r");
+               strip_newlines(str);
+               printf("%s", str);
+               fflush(stdout);
+               sleep(1);
+       }
+
+       return 0;
+}