Compilare: user.cpp: In function ‘int main()’: user.cpp:14:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=2; i<strlen(s)-1; i++) ^ user.cpp:20:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i; j<strlen(s)-1; j++) ^ user.cpp:10:13: warning: unused variable ‘n’ [-Wunused-variable] int i,j,n,nr,maxx=0,p; ^