#include <stdio.h> void Example() { printf("Example:\n"); int a = 4; const int& b = a; int* p = (int*)&b; //b = 5; *p = 5; printf("a = %d\n", a); printf("b = %d\n", b); } void Demo() { printf("Demo:\n"); const int& c = 1; int* p = (int*)&c; //c = 5; *p = 5; printf("c = %d\n", c); } int main(int argc, char *argv[]) { Example(); printf("\n"); Demo(); return 0; }
#include <stdio.h> struct TRef { char& r; }; int main(int argc, char *argv[]) { char c = 'c'; char& rc = c; TRef ref = { c }; printf("sizeof(char&) = %d\n", sizeof(char&)); printf("sizeof(rc) = %d\n", sizeof(rc)); printf("sizeof(TRef) = %d\n", sizeof(TRef)); printf("sizeof(ref.r) = %d\n", sizeof(ref.r)); return 0; } #include <stdio.h> struct TRef { char* before; char& ref; char* after; }; int main(int argc, char* argv[]) { char a = 'a'; char& b = a; char c = 'c'; TRef r = {&a, b, &c}; printf("sizeof(r) = %d\n", sizeof(r)); printf("sizeof(r.before) = %d\n", sizeof(r.before)); printf("sizeof(r.after) = %d\n", sizeof(r.after)); printf("&r.before = %p\n", &r.before); printf("&r.after = %p\n", &r.after); return 0; }
#include <stdio.h> int& demo() { int d = 0; printf("demo: d = %d\n", d); return d; } int& func() { static int s = 0; printf("func: s = %d\n", s); return s; } int main(int argc, char* argv[]) { int& rd = demo(); int& rs = func(); printf("\n"); printf("main: rd = %d\n", rd); printf("main: rs = %d\n", rs); printf("\n"); rd = 10; rs = 11; demo(); func(); printf("\n"); printf("main: rd = %d\n", rd); printf("main: rs = %d\n", rs); printf("\n"); return 0; }
