Compilare: main.cpp: In function 'void read(const int&, const int*)': main.cpp:36:38: warning: writing into constant object (argument 3) [-Wformat=] fscanf(in_file, "%d", &arr_length); ^ main.cpp:38:39: warning: writing into constant object (argument 3) [-Wformat=] fscanf(in_file, "%hu", &arr[i]); ^ main.cpp:38:39: warning: format '%hu' expects argument of type 'short unsigned int*', but argument 3 has type 'const int*' [-Wformat=] main.cpp:36:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in_file, "%d", &arr_length); ^ main.cpp:38:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in_file, "%hu", &arr[i]); ^ main.cpp: In function 'int solve(int, const int*)': main.cpp:101:26: warning: 'result' may be used uninitialized in this function [-Wmaybe-uninitialized] return product / result; ^~~~~~