Compilare: user.cpp: In function ‘int cmmc(int, int)’: user.cpp:7:9: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] { int r,a,b,p,k=0,N; ^ user.cpp:7:11: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] { int r,a,b,p,k=0,N; ^ user.cpp:7:13: warning: unused variable ‘p’ [-Wunused-variable] { int r,a,b,p,k=0,N; ^ user.cpp:7:15: warning: unused variable ‘k’ [-Wunused-variable] { int r,a,b,p,k=0,N; ^ user.cpp:7:19: warning: unused variable ‘N’ [-Wunused-variable] { int r,a,b,p,k=0,N; ^ user.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:22:21: warning: unused variable ‘a’ [-Wunused-variable] int N,k=0,j=1,i,a,b,p; ^ user.cpp:22:23: warning: unused variable ‘b’ [-Wunused-variable] int N,k=0,j=1,i,a,b,p; ^ user.cpp:22:25: warning: unused variable ‘p’ [-Wunused-variable] int N,k=0,j=1,i,a,b,p; ^