Compilare: user.cpp: In function ‘int main()’: user.cpp:13:13: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] int n,k,a[100][100],p; ^ user.cpp:13:25: warning: unused variable ‘p’ [-Wunused-variable] int n,k,a[100][100],p; ^ user.cpp:15:9: warning: unused variable ‘j’ [-Wunused-variable] int j=k; ^ user.cpp: In function ‘int par(int)’: user.cpp:8:1: warning: control reaches end of non-void function [-Wreturn-type] } ^