Compilare: user.cpp: In function ‘int main()’: user.cpp:27:25: warning: unused variable ‘k’ [-Wunused-variable] int v[2005],k=0,d[2005]; ^ user.cpp:6:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxsubsum.in","r",stdin); ^ user.cpp:7:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxsubsum.out","w",stdout); ^ user.cpp:8:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&p,&q); ^ user.cpp:9:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=i;i<=p;i++) scanf("%d",&aa[i]); ^ user.cpp:10:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=q;i++) scanf("%d",&bb[i]); ^ user.cpp:9:15: warning: ‘i’ is used uninitialized in this function [-Wuninitialized] for(int i=i;i<=p;i++) scanf("%d",&aa[i]); ^