C++ 23 in tests

Author: rtoal

cpp/test.sh

@@ -1,15 +1,15 @@
 #!/usr/bin/env bash
-g++ -std=c++20 anagrams.cpp && ./a.out rats | diff ../test/rats_heap_expected - && \
-g++ -std=c++20 animals.cpp && ./a.out && \
-g++ -std=c++20 basic_types.cpp && ./a.out && \
-g++ -std=c++20 clockhands.cpp && ./a.out | diff ../test/clockhands_expected - && \
-g++ -std=c++20 if_then_else.cpp && ./a.out && \
-g++ -std=c++20 maps.cpp && ./a.out && \
-g++ -std=c++20 permutations.cpp && ./a.out I like carrots | diff ../test/carrots_expected - && \
-g++ -std=c++20 smart_pointers.cpp && ./a.out && \
-g++ -std=c++20 sum_of_even_squares.cpp && ./a.out && \
-g++ -std=c++20 top_ten_scorers.cpp && ./a.out < ../test/wnba_input | diff ../test/wnba_expected - && \
-g++ -std=c++20 triple.cpp && ./a.out | diff ../test/triple_expected -
+g++ -std=c++23 anagrams.cpp && ./a.out rats | diff ../test/rats_heap_expected - && \
+g++ -std=c++23 animals.cpp && ./a.out && \
+g++ -std=c++23 basic_types.cpp && ./a.out && \
+g++ -std=c++23 clockhands.cpp && ./a.out | diff ../test/clockhands_expected - && \
+g++ -std=c++23 if_then_else.cpp && ./a.out && \
+g++ -std=c++23 maps.cpp && ./a.out && \
+g++ -std=c++23 permutations.cpp && ./a.out I like carrots | diff ../test/carrots_expected - && \
+g++ -std=c++23 smart_pointers.cpp && ./a.out && \
+g++ -std=c++23 sum_of_even_squares.cpp && ./a.out && \
+g++ -std=c++23 top_ten_scorers.cpp && ./a.out < ../test/wnba_input | diff ../test/wnba_expected - && \
+g++ -std=c++23 triple.cpp && ./a.out | diff ../test/triple_expected -
 
 if [ $? -ne 0 ]; then
     echo