Compilare: user.cpp: In function ‘int dinamica(tractoree)’: user.cpp:31:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a.size(); ++i) ^ user.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a.size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:68:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("praslea.in","r",stdin); ^ user.cpp:69:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("praslea.out","w",stdout); ^ user.cpp:71:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &RiscMax); ^ user.cpp:75:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &intra, &iese, &F[i], &R[i]); ^