Compilare: user.cpp: In function ‘bool ver(int, int, int, int)’: user.cpp:47:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dr[i].a<a && dr[i].b<b && dr[i].c>c && dr[i].d>d) ^ user.cpp:47:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dr[i].a<a && dr[i].b<b && dr[i].c>c && dr[i].d>d) ^ user.cpp:47:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dr[i].a<a && dr[i].b<b && dr[i].c>c && dr[i].d>d) ^ user.cpp:47:59: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dr[i].a<a && dr[i].b<b && dr[i].c>c && dr[i].d>d) ^ user.cpp: In function ‘void citire()’: user.cpp:55:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<p;i++) ^ user.cpp: In function ‘int cautare(std::vector<unsigned int>, int)’: user.cpp:78:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vec[m]==val) ^ user.cpp:80:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(val<vec[m]) ^ user.cpp: In function ‘void generare()’: user.cpp:91:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=dr[k].na;j<dr[k].nc;j++) ^ user.cpp:92:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=dr[k].nb;i<dr[k].nd ;i++) ^ user.cpp: In function ‘void solve()’: user.cpp:106:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=nl;i++) ^ user.cpp:108:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=nc;j++) ^ user.cpp: In function ‘int main()’: user.cpp:139:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=nl+1;i++) ^ user.cpp:141:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=nc+1;i++) ^ user.cpp: In function ‘void citire()’: user.cpp:57:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n%d %d %d %d", &a, &b, &c, &d); ^ user.cpp: In function ‘int main()’: