Compilare: main.cpp: In function 'int main()': main.cpp:98:9: warning: unused variable 'i' [-Wunused-variable] 98 | int i, j, n, nr,k,a; | ^ main.cpp:98:12: warning: unused variable 'j' [-Wunused-variable] 98 | int i, j, n, nr,k,a; | ^ main.cpp:98:15: warning: unused variable 'n' [-Wunused-variable] 98 | int i, j, n, nr,k,a; | ^ main.cpp:98:18: warning: unused variable 'nr' [-Wunused-variable] 98 | int i, j, n, nr,k,a; | ^~ main.cpp:98:21: warning: unused variable 'k' [-Wunused-variable] 98 | int i, j, n, nr,k,a; | ^