Originally, structs in C suffered many of the same deficiencies as arrays, but it was commonplace even before the ANSI C Standard for compilers to support struct assignments, struct arguments, and struct function return values. Structs in modern C are almost first class types, but they still lack support for comparisons for equality or inequality using the == and != operators. The C committee has entertained proposals for supporting == and != for structs, but the debate over how to treat union members of structs caused the proposal to be shelved.

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