Compilare: user.cpp: In function ‘int cadr(int, int, int, int, int)’: user.cpp:17:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i <= n) ^ user.cpp: In function ‘int main()’: user.cpp:87:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d%d",&n,&cx,&cy); ^