Compilare: main.cpp: In function 'int main()': main.cpp:58:15: warning: unused variable 'j' [-Wunused-variable] 58 | { int i,j; | ^ main.cpp: In function 'int merge(int, int)': main.cpp:38:16: warning: 'void operator delete(void*, std::size_t)' called on pointer returned from a mismatched allocation function [-Wmismatched-new-delete] 38 | delete c; | ^ main.cpp:22:31: note: returned from 'void* operator new [](std::size_t)' 22 | { int *c=new int[dr-st+2]; | ^