[dundarious]

There are pretty fundamental differences in key areas, like zero initialization of a struct or array (`{0}` vs `{}`). Use the C way in C++ and you only 0 the first element or member. Use the C++ way in C and you don't 0 anything.

IMO there's no point even attempting a blind recompile of C as C++. A transpiler tool would be needed.

[plorkyeran]

`int array[100] = {0};` results in an array with 100 zeroes in both C and C++. In C if there are too few values the remaining ones are initialized following the same rules as for static variables, and in C++ they're initialized using value initialization. For all types supported by C these have the same result.