Compilare: user.cpp: In function ‘void Citire()’: user.cpp:13:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=N;i++) ^ user.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=N;j++) ^ user.cpp: In function ‘void Roy_Floyd()’: user.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;k<=N;k++) ^ user.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=N;i++) ^ user.cpp:26:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=N;j++) ^ user.cpp: In function ‘void Afis()’: user.cpp:37:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=N;i++) ^ user.cpp:39:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=N;j++) ^ user.cpp:43:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=N;i++) ^ user.cpp:45:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=N;j++) ^