1 namespace N0 { 2 namespace N1 { 3 4 char *buf0 = nullptr; 5 char buf1[] = {0, 1, 2, 3, 4, 5, 6, 7}; 6 sum(char * buf,int size)7char sum(char *buf, int size) { 8 char result = 0; 9 for (int i = 0; i < size; i++) 10 result += buf[i]; 11 return result; 12 } 13 14 } // namespace N1 15 } // namespace N0 16 main()17int main() { 18 char result = N0::N1::sum(N0::N1::buf1, sizeof(N0::N1::buf1)); 19 return 0; 20 } 21