What may be surprising, is that although the parameter is a const inside the function, the compiler otherwise treats the definition of fcn as if we had defined the parameter as a plain int:
void fcn(const int i) { /* fcn can read but not write to i */ } void fcn(int i) { /* ... */ } // error: redefines fcn(int)This usage exists to support compatibility with the C language, which makes no distinction between functions taking const or nonconst parameters.
