Compilare: user.cpp: In function ‘int main()’: user.cpp:68:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(xyzt);i++) ~^~~~~~~~~~~~~ user.cpp:60:19: warning: unused variable ‘stt’ [-Wunused-variable] {int i,v[10],j,kk,stt,dr,m,l,k; ^~~ user.cpp:60:23: warning: unused variable ‘dr’ [-Wunused-variable] {int i,v[10],j,kk,stt,dr,m,l,k; ^~ user.cpp:60:26: warning: unused variable ‘m’ [-Wunused-variable] {int i,v[10],j,kk,stt,dr,m,l,k; ^