Compilare: user.cpp: In function ‘int main()’: user.cpp:14:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(strlen(s)>nrmax){strcpy(max,s);nrmax=strlen(max);} ^ user.cpp:15:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(strlen(s)==nrmax)if(strcmp(s , max) < 0)strcpy(max,s);} ^ user.cpp:9:33: warning: unused variable ‘nrnrmax’ [-Wunused-variable] int varianta, nr, i,nrmax=0,nrnrmax=0; ^ user.cpp:15:51: warning: ‘max’ may be used uninitialized in this function [-Wmaybe-uninitialized] else if(strlen(s)==nrmax)if(strcmp(s , max) < 0)strcpy(max,s);} ^