The official rationale for the 1999 C standard ( C99) "endorse the principle of maintaining the largest common subset" between C and C++ "while maintaining a distinction between them and allowing them to evolve separately", and stated that the authors were "content to let C++ be the big and ambitious language." Others have argued that since C and C++ are two different languages, compatibility between them is useful but not vital according to this camp, efforts to reduce incompatibility should not hinder attempts to improve each language in isolation.
Code blocks not compiling code#
This article, however, focuses on differences that cause conforming C code to be ill-formed C++ code, or to be conforming/well-formed in both languages but to behave differently in C and C++.ījarne Stroustrup, the creator of C++, has suggested that the incompatibilities between C and C++ should be reduced as much as possible in order to maximize interoperability between the two languages. Likewise, C++ introduces many features that are not available in C and in practice almost all code written in C++ is not conforming C code.
However, C is not a subset of C++, and nontrivial C programs will not compile as C++ code without modification. Due to this, development tools for the two languages (such as IDEs and compilers) are often integrated into a single product, with the programmer able to specify C or C++ as their source language. C++ began as a fork of an early, pre- standardized C, and was designed to be mostly source-and-link compatible with C compilers of the time. The C and C++ programming languages are closely related but have many significant differences.
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