The frequency of the updates are only part of the story though. C had C89, C99, C11, C17. C++ had C++98, C++03, C++11, C++14, C++17, C++20. C++ is updated more

The frequency of the updates are only part of the story though. C had C89, C99, C11, C17. C++ had C++98, C++03, C++11, C++14, C++17, C++20. C++ is updated more often, but it also makes more significant changes in each version than C does. I don't know Ada as well as I know C and C++, but I believe Ada lands somewhere between C and C++ in terms of how fast-moving it is. Makes sense that Ada is pretty slow moving, given its purpose.