Compilare: user.cpp: In function ‘void v1()’: user.cpp:34:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<strlen(sir[j]); k++) ^ user.cpp: In function ‘void v2()’: user.cpp:64:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<strlen(sir[j]); k++) ^ user.cpp:55:22: warning: unused variable ‘maxi’ [-Wunused-variable] int nr=0, nrs=0, maxi=0; ^ user.cpp:56:10: warning: unused variable ‘maxisir’ [-Wunused-variable] char maxisir[5000]; ^