Compilare: user.cpp: In function ‘int main()’: user.cpp:36:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((x1[i]>=x&&x>=x2[i]||x1[i]<=x&&x<=x2[i])&&(y1[i]<=y&&y<=y2[i]||y1[i]>=y&&y>=y2[i])) ^ user.cpp:36:66: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((x1[i]>=x&&x>=x2[i]||x1[i]<=x&&x<=x2[i])&&(y1[i]<=y&&y<=y2[i]||y1[i]>=y&&y>=y2[i])) ^ user.cpp:37:27: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((x1[j]>=x&&x>=x2[j]||x1[j]<=x&&x<=x2[j])&&(y1[j]<=y&&y<=y2[j]||y1[j]>=y&&y>=y2[j])) ^ user.cpp:37:69: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((x1[j]>=x&&x>=x2[j]||x1[j]<=x&&x<=x2[j])&&(y1[j]<=y&&y<=y2[j]||y1[j]>=y&&y>=y2[j])) ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&n); ^ user.cpp:13:62: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%lf%lf%lf%lf" ,&x1[i],&y1[i],&x2[i],&y2[i]); ^