Compilare: user.cpp:53:21: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix] while(s[i]>='a'and s[i]<='z') ^ user.cpp: In function ‘int main()’: user.cpp:46:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] s[loc]=NULL; ^ user.cpp:57:15: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] cuv[j]=NULL; ^ user.cpp:11:23: warning: unused variable ‘k’ [-Wunused-variable] int n,i,tt,nr,loc,k,j,rand[100],cmin; ^ user.cpp:11:27: warning: unused variable ‘rand’ [-Wunused-variable] int n,i,tt,nr,loc,k,j,rand[100],cmin; ^ user.cpp:11:37: warning: unused variable ‘cmin’ [-Wunused-variable] int n,i,tt,nr,loc,k,j,rand[100],cmin; ^ user.cpp:12:10: warning: unused variable ‘min’ [-Wunused-variable] char min,copie[100],aux; ^ user.cpp:12:14: warning: unused variable ‘copie’ [-Wunused-variable] char min,copie[100],aux; ^ user.cpp:12:25: warning: unused variable ‘aux’ [-Wunused-variable] char min,copie[100],aux; ^