Compilare: user.cpp: In function ‘int main()’: user.cpp:20:9: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j,cate=0,s1=0,s2=0,min=99999; ^ user.cpp:20:11: warning: unused variable ‘cate’ [-Wunused-variable] int n,i,j,cate=0,s1=0,s2=0,min=99999; ^ user.cpp:20:18: warning: unused variable ‘s1’ [-Wunused-variable] int n,i,j,cate=0,s1=0,s2=0,min=99999; ^ user.cpp:20:23: warning: unused variable ‘s2’ [-Wunused-variable] int n,i,j,cate=0,s1=0,s2=0,min=99999; ^ user.cpp:17:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("leduri.in","r",stdin); ^ user.cpp:18:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("leduri.out","w",stdout); ^ user.cpp:22:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d",&n); ^ user.cpp:25:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d",&v1[i]);} ^ user.cpp:28:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d",&v2[i]);} ^