diff --git a/chp6/nice.c b/chp6/nice.c
new file mode 100644
index 0000000..c4a0e87
--- /dev/null
+++ b/chp6/nice.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+int main(void)
+{
+	int ret;
+	ret = nice(0);
+	printf("Current nice by nice function: %d\n", ret);
+	ret = getpriority(PRIO_PROCESS, 0);
+	printf("Current nice by getpriority function: %d\n", ret);
+	if (setpriority(PRIO_PROCESS, 0, 10) == -1) {
+		perror("setpriority");
+		return -1;
+	}
+	ret = getpriority(PRIO_PROCESS, 0);
+	printf("Current nice by getpriority function: %d\n", ret);
+	return 0;
+}