Compilare: main.cpp: In function 'int main()': main.cpp:51:27: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 51 | char* inputFilename = "cifre4.in"; | ^~~~~~~~~~~ main.cpp:52:28: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 52 | char* outputFilename = "cifre4.out"; | ^~~~~~~~~~~~ main.cpp:51:11: warning: unused variable 'inputFilename' [-Wunused-variable] 51 | char* inputFilename = "cifre4.in"; | ^~~~~~~~~~~~~ main.cpp:52:11: warning: unused variable 'outputFilename' [-Wunused-variable] 52 | char* outputFilename = "cifre4.out"; | ^~~~~~~~~~~~~~