Compilare: user.cpp: In function ‘int re()’: user.cpp:7:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int sk()’: user.cpp:11:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int solvetest()’: user.cpp:16:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&k); ^ user.cpp: In function ‘int main()’: user.cpp:31:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mere.in","r",stdin); ^ user.cpp:32:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mere.out","w",stdout); ^ user.cpp:34:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (scanf("%d",&t);t;t--) ^