Compilare: user.cpp: In function ‘int good(int, int, int, int, int, int)’: user.cpp:48:17: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(y==y1&&(x1<=x&&x<=x2)||(x2<=x&&x<=x1)) ^ user.cpp:53:17: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x==x1&&(y1<=y&&y<=y2)||(y2<=y&&y<=y1)) ^ user.cpp: In function ‘char nextch()’: user.cpp:63:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,1,MAXBUF,fi); ^