Compilare: user.cpp: In function ‘int main()’: user.cpp:86:23: warning: unused variable ‘i’ [-Wunused-variable] int len=strlen(r),i,j,nr=0,x,mn,ok,intra,cac,odata=0; ^ user.cpp:86:32: warning: unused variable ‘x’ [-Wunused-variable] int len=strlen(r),i,j,nr=0,x,mn,ok,intra,cac,odata=0; ^ user.cpp:86:34: warning: unused variable ‘mn’ [-Wunused-variable] int len=strlen(r),i,j,nr=0,x,mn,ok,intra,cac,odata=0; ^ user.cpp:86:37: warning: unused variable ‘ok’ [-Wunused-variable] int len=strlen(r),i,j,nr=0,x,mn,ok,intra,cac,odata=0; ^ user.cpp:86:40: warning: unused variable ‘intra’ [-Wunused-variable] int len=strlen(r),i,j,nr=0,x,mn,ok,intra,cac,odata=0; ^ user.cpp: In function ‘int compara(int)’: user.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type] } ^