Compilare: user.cpp: In function ‘int main()’: user.cpp:47:13: warning: unused variable ‘x’ [-Wunused-variable] int x = (events[i].type ? dr[events[i].id] : to[events[i].id]); ^ user.cpp:31:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &n, &m); ^ user.cpp:34:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &to[i], &capacity[i]); ^ user.cpp:38:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &st[i], &dr[i]); ^