Compilare: user.cpp: In function ‘int main()’: user.cpp:108:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &N, &Q); ^ user.cpp:110:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%hd", &val[i]); ^ user.cpp:113:90: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %lld %lld %lld %d %d %d", &x, &y, &z, &t1, &t2, &t3, &p1, &p2, &p3); ^ user.cpp:119:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("complet.out", "w", stdout); ^