prodmax.cpp: In function `int main()': prodmax.cpp:15: warning: char format, different type arg (arg 2) prodmax.cpp:20: warning: assignment to non-pointer type `char' from NULL prodmax.cpp:20: warning: argument to non-pointer type `char' from NULL prodmax.cpp:14: warning: `int sol1' might be used uninitialized in this function prodmax.cpp:14: warning: `int sol2' might be used uninitialized in this function