Compilare: user.cpp: In function ‘int verif(char*, char*)’: user.cpp:23:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(s2);i++) ^ user.cpp:27:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j<strlen(s1)) return 0; ^ user.cpp: In function ‘int main()’: user.cpp:43:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(mx<strlen(s[i].sir)) {mx=strlen(s[i].sir);strcpy(cuv,s[i].sir);} ^ user.cpp:44:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(mx==strlen(s[i].sir)) strcpy(cuv,s[i].sir); ^