Compilare: user.cpp: In function ‘void afisare()’: user.cpp:72:34: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long unsigned int’ [-Wformat=] fprintf(fout, "%d\n", costmin); ^ user.cpp: In function ‘void citire()’: user.cpp:30:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &m); ^ user.cpp:33:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d", &a, &b, &c); ^