Compilare: user.cpp: In function ‘void citire(int)’: user.cpp:10:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:12:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else for(j=1;j<=n;j++){mat[i][j]=nr;nr++;} ^ user.cpp: In function ‘void copie(int)’: user.cpp:22:9: warning: unused variable ‘j’ [-Wunused-variable] { int i,j; ^ user.cpp: In function ‘void citire2(int, int, int)’: user.cpp:62:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n*n;i++) ^ user.cpp:64:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ma<m+1)ma=m+1; ^ user.cpp:61:17: warning: unused variable ‘j’ [-Wunused-variable] {int unsigned i,j; ^ user.cpp: In function ‘int main()’: user.cpp:81:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=ma;i++) ^ user.cpp:87:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] { s=0; for(i=1;i<=ma;i++) ^