Compilare: user.cpp: In function ‘int main()’: user.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++) ^ user.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m;j++) ^ user.cpp:21:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<m;k++) ^ user.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m;j++) ^ user.cpp:26:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++) ^ user.cpp:31:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l=0;l<n;l++) ^ user.cpp:34:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++) ^ user.cpp:35:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m;j++) ^ user.cpp:18:29: warning: array subscript is above array bounds [-Warray-bounds] a[i][17]+=a[i][j]; ^ user.cpp:18:29: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:20:19: warning: array subscript is above array bounds [-Warray-bounds] if(a[i][17]<0) ^