Compilare: user.cpp: In function ‘void write()’: user.cpp:122:70: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (folosit[distante[i][it].poz] && it < distante[i].size()) ^ user.cpp: In function ‘void read()’: user.cpp:70:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &n, &m, &u, &x); ^ user.cpp:75:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a); ^ user.cpp:83:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^