Compilare: user.cpp: In function ‘int main()’: user.cpp:87:38: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘bool*’ [-Wformat=] fscanf(fin, "%d", &friends[i]); ^ user.cpp:82:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:85:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &N, &K); ^ user.cpp:87:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &friends[i]); ^ user.cpp:88:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &M); ^ user.cpp:90:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d %d", &x, &y, &t, &w); ^