Compilare: user.cpp: In function ‘int main()’: user.cpp:69:15: warning: unused variable ‘a’ [-Wunused-variable] int x, y, a, b, maxVal; ^ user.cpp:69:18: warning: unused variable ‘b’ [-Wunused-variable] int x, y, a, b, maxVal; ^ user.cpp:69:21: warning: unused variable ‘maxVal’ [-Wunused-variable] int x, y, a, b, maxVal; ^ user.cpp: In function ‘char getChar()’: user.cpp:44:52: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(pos == BUF) pos = 0, fread(buf, 1, BUF, fin); ^