Compilare: user.cpp: In function ‘int main()’: user.cpp:19:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(minim>strlen(a[i])) ^ user.cpp:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(a[poz]);i++) ^ user.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<strlen(a[poz])-1;j++) ^