Compilare: user.cpp: In function ‘int main()’: user.cpp:25:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d%d%d", &n, &m, &p, &b, &e); ^ user.cpp:27:78: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d%d%d", &mt[i].x, &mt[i].y, &mt[i].r, &mt[i].t, &mt[i].d); ^