Compilare: main.cpp: In function 'int main()': main.cpp:33:17: warning: unused variable 'c' [-Wunused-variable] int a,b,c,a1,b1; ^ main.cpp:10:19: warning: unused variable 'a' [-Wunused-variable] int n,i,j,m,k,a,b,a1,a2; ^ main.cpp:10:21: warning: unused variable 'b' [-Wunused-variable] int n,i,j,m,k,a,b,a1,a2; ^ main.cpp:10:23: warning: unused variable 'a1' [-Wunused-variable] int n,i,j,m,k,a,b,a1,a2; ^~ main.cpp:10:26: warning: unused variable 'a2' [-Wunused-variable] int n,i,j,m,k,a,b,a1,a2; ^~