diff --git a/chapter-2-types-operators-expressions/1.ranges-of-variables.c b/chapter-2-types-operators-expressions/1.ranges-of-variables.c
index f715efc..efee146 100644
--- a/chapter-2-types-operators-expressions/1.ranges-of-variables.c
+++ b/chapter-2-types-operators-expressions/1.ranges-of-variables.c
@@ -23,13 +23,13 @@ main()
 	printf("\nFrom calc:\n");
 
 	/*signed types*/
-	printf("signed char min=%d\n",-(char)((unsigned char) ~0 >> 1));
+	printf("signed char min=%d\n",-(char)((unsigned char) ~0 >> 1)-1);
 	printf("signed char max=%d\n",(char)((unsigned char) ~0 >> 1));
-	printf("signed int min=%d\n",-(int)((unsigned int) ~0 >> 1));
+	printf("signed int min=%d\n",-(int)((unsigned int) ~0 >> 1)-1);
 	printf("signed int max=%d\n",(int)((unsigned int) ~0 >> 1));
-	printf("signed short min=%d\n",-(short)((unsigned short) ~0 >> 1));
+	printf("signed short min=%d\n",-(short)((unsigned short) ~0 >> 1)-1);
 	printf("signed short max=%d\n",(short)((unsigned short) ~0 >> 1));
-	printf("signed long min=%ld\n",-(long)((unsigned long) ~0 >> 1));
+	printf("signed long min=%ld\n",-(long)((unsigned long) ~0 >> 1)-1);
 	printf("signed long max=%ld\n",(long)((unsigned long) ~0 >> 1));
 
 	/*unsigned types*/