Compilare: main.cpp: In function 'int main()': main.cpp:24:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("momente.in","r",stdin); ^ main.cpp:25:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("momente.out","w",stdout); ^ main.cpp:27:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &t); ^ main.cpp:90:43: warning: 's1' may be used uninitialized in this function [-Wmaybe-uninitialized] int sfz1=p[NMAX]-p[o1*10000+m1*100+s1-1],sfz2=p[o2*10000+m2*100+s2]; ~~~~~~~~~~~~~~~^~~ main.cpp:90:39: warning: 'm1' may be used uninitialized in this function [-Wmaybe-uninitialized] int sfz1=p[NMAX]-p[o1*10000+m1*100+s1-1],sfz2=p[o2*10000+m2*100+s2]; ~~^~~~