Compilare: user.cpp: In function ‘int main()’: user.cpp:25:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=N;j++) {if(A[i][j]==p) l++; if(l==k){g<<i<<endl; break;}} ^ user.cpp:26:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<k) g<<0<<endl; ^ user.cpp:30:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) {if(A[i][j]==p) l++; if(l==k){g<<j<<endl; break;}} ^ user.cpp:31:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<k) g<<0<<endl; ^