Compilare: main.cpp: In function 'int main()': main.cpp:8:6: warning: unused variable 'i' [-Wunused-variable] {int i,j; ^ main.cpp:8:8: warning: unused variable 'j' [-Wunused-variable] {int i,j; ^ main.cpp:10:9: warning: unused variable 'a' [-Wunused-variable] int a[n+1][k+1]; ^