Compilare: user.cpp: In function ‘void computeS_Sp()’: user.cpp:22:14: warning: statement has no effect [-Wunused-value] for(j;j<=n;j++) ^ user.cpp: In function ‘int mode(int, int)’: user.cpp:50:54: warning: unused variable ‘frecvn’ [-Wunused-variable] int i,blockx,blocky,nr=100003,frecv=0,start,stop,frecvn; ^ user.cpp: In function ‘int main()’: user.cpp:139:12: warning: unused variable ‘j’ [-Wunused-variable] {int m,i,x,j,y; ^