Compilare: user.cpp: In function ‘int main()’: user.cpp:29:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x<=n) ^ user.cpp:47:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(y<=m) ^ user.cpp:93:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x<=n && y<=m) ^ user.cpp:93:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x<=n && y<=m) ^ user.cpp:98:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x+1<=n) ^ user.cpp:102:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p<=n) ^ user.cpp:109:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(y+1<=m) ^ user.cpp:113:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(q<=m) ^ user.cpp:127:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x>=1 && y<=m) ^ user.cpp:142:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(y+1<=m) ^ user.cpp:146:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(q<=m) ^ user.cpp:159:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x<=n && y>=1) ^ user.cpp:164:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x+1<=n) ^ user.cpp:168:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p<=n) ^