dir.cpp: In function `void fisier()': dir.cpp:13: warning: assignment to non-pointer type `char' from NULL dir.cpp:13: warning: argument to non-pointer type `char' from NULL dir.cpp: In function `void structura()': dir.cpp:28: warning: assignment to non-pointer type `char' from NULL dir.cpp:28: warning: argument to non-pointer type `char' from NULL dir.cpp: In function `int main()': dir.cpp:53: warning: char format, different type arg (arg 2)