Compilare: user.cpp: In function ‘int main()’: user.cpp:41:12: warning: left operand of comma operator has no effect [-Wunused-value] aux,tr=0; ^ user.cpp:6:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tort.in","r",stdin); ^ user.cpp:7:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tort.out","w",stdout); ^ user.cpp:10:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp:32:12: warning: ‘aux’ may be used uninitialized in this function [-Wmaybe-uninitialized] aux/=10; ~~~^~~~