Compilare: user.cpp: In function ‘void citire()’: user.cpp:10:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=M;i++) ^ user.cpp:12:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=N;j++) ^ user.cpp: In function ‘void afisare()’: user.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=M;i++) ^ user.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=N;j++) ^ user.cpp: In function ‘void cmls()’: user.cpp:26:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=M;i++) ^ user.cpp:28:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=M;j++) ^ user.cpp:40:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=ela+1;i<=M;i++) ^ user.cpp:42:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j=elb+1;j<=N;j++) ^ user.cpp:52:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<MAX;i++) ^ user.cpp:25:13: warning: ‘elb’ may be used uninitialized in this function [-Wmaybe-uninitialized] int ela,elb; ^ user.cpp:40:19: warning: ‘ela’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=ela+1;i<=M;i++) ^