Compilare: user.cpp: In function ‘int calc(int)’: user.cpp:8:8: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int i,x,y,z,s; ^ user.cpp: In function ‘int main()’: user.cpp:26:30: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] scanf("%lld%d%d",&n,&m,&p); ^ user.cpp:26:30: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘long long int*’ [-Wformat=] user.cpp:22:9: warning: unused variable ‘i’ [-Wunused-variable] int i,q,x; ^ user.cpp:22:11: warning: unused variable ‘q’ [-Wunused-variable] int i,q,x; ^ user.cpp:22:13: warning: unused variable ‘x’ [-Wunused-variable] int i,q,x; ^ user.cpp:24:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("proc.in","r",stdin); ^ user.cpp:25:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("proc.out","w",stdout); ^ user.cpp:26:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%d%d",&n,&m,&p); ^