Compilare: user.cpp: In function ‘int main()’: user.cpp:83:26: warning: left operand of comma operator has no effect [-Wunused-value] for (mn=k; mn>=0,ok>=1; mn--) ^ user.cpp:52:23: warning: unused variable ‘i’ [-Wunused-variable] int len=strlen(r),i,j,k=0,nr,x,mn,ok,intra; ^