Compilare: user.cpp: In function ‘void add1(int)’: user.cpp:16:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<h1[cx].size()&&pp==1;i++) ^ user.cpp: In function ‘void add2(int)’: user.cpp:34:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<h2[cx].size()&&pp==1;i++) ^ user.cpp: In function ‘int check1(int)’: user.cpp:51:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<h1[cx].size()&&pp==1;i++) ^ user.cpp: In function ‘int check2(int)’: user.cpp:62:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<h2[cx].size()&&pp==1;i++) ^ user.cpp: In function ‘void sterge1(int)’: user.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<h1[cx].size()&&pp==1;i++) ^ user.cpp: In function ‘void sterge2(int)’: user.cpp:85:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<h2[cx].size()&&pp==1;i++) ^ user.cpp: In function ‘int main()’: user.cpp:98:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.in","r",stdin); ^ user.cpp:99:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.out","w",stdout); ^ user.cpp:100:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&x1,&x2); ^ user.cpp:102:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^