From afc4c14e54d40e549acfc002e251cbf69b83595e Mon Sep 17 00:00:00 2001
From: Tibor Bizjak <tibor.bizjak@gmail.com>
Date: Wed, 12 Jul 2023 21:38:31 +0200
Subject: [PATCH] Inital commit for udemy c++ course

---
 .gitignore                       |  8 ++++++++
 README.md                        |  1 +
 udemy-cpp/01-basics/01-ranges.cc | 22 ++++++++++++++++++++++
 3 files changed, 31 insertions(+)
 create mode 100644 udemy-cpp/01-basics/01-ranges.cc

diff --git a/.gitignore b/.gitignore
index 1879728..7fb1a14 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,11 @@
 !k\&r/*/[0-9]*.c
 # and header files
 !k\&r/*/*.h
+
+# ---- udemy c++ .gitignore ----
+# except udemy cpp
+!udemy-cpp/
+# excpet chapters
+!udemy-cpp/[0-9]*/
+# except solutions 
+!udemy-cpp/*/[0-9]*.cc
diff --git a/README.md b/README.md
index 33b912e..cb1dedf 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
 # Solutions to varius excersises
 Solutions to varius excersises from different sources.
 - k&r - [The C Programming Language](https://en.wikipedia.org/wiki/The_C_Programming_Language)
+- udemy-cpp - [Quick Start to Modern C++ for Programmers](https://www.udemy.com/course/quick-start-to-modern-c-for-programmers/)
diff --git a/udemy-cpp/01-basics/01-ranges.cc b/udemy-cpp/01-basics/01-ranges.cc
new file mode 100644
index 0000000..f90cb14
--- /dev/null
+++ b/udemy-cpp/01-basics/01-ranges.cc
@@ -0,0 +1,22 @@
+#include <cstdint>
+#include <cinttypes>
+#include <iostream>
+
+/* somewhat overcomplicated, could use macros provided by cstdint */
+/* take advantage of two's complement */
+#define INT_TEST(BITS) \
+    std::int##BITS##_t i##BITS = ~(~UINT##BITS##_C(0) << (BITS-1)); \
+    std::uint##BITS##_t u##BITS = -1; \
+    std::printf("%-10s %" PRId##BITS "\n", "int"#BITS"_t" , i##BITS); \
+    std::printf("%-10s %" PRIu##BITS "\n", "uint"#BITS"_t" , u##BITS)
+
+#define BITS X(8) X(16) X(32) X(64)
+
+/* prints sizes of varius (u)intX_t types */
+int main()
+{
+    std::cout << "max values of intx_t";
+    #define X(B) std::cout << '\n'; INT_TEST(B); 
+    BITS
+    #undef X
+}