Compilare: user.cpp: In function ‘void build(int, int, int)’: user.cpp:20:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if ( left <= right ) ^ user.cpp: In function ‘int getMax(int, int, int, int, int)’: user.cpp:37:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if ( left <= right ) ^ user.cpp: In function ‘int update(int, int, int, int, int)’: user.cpp:57:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if ( left <= right ) ^ user.cpp:71:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void read()’: user.cpp:12:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f , "%d %d" , &N , &M ); ^ user.cpp:14:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f , "%d" , &myInts [ i ] ); ^ user.cpp: In function ‘int getMax(int, int, int, int, int)’: user.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:82:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f , "%d %d %d" , &type , &a , &b ); ^