Compilare: user.cpp: In function ‘int main()’: user.cpp:13:27: warning: unused variable ‘j’ [-Wunused-variable] int limS, limD, n, i, j; ^ user.cpp:15:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &n); ^ user.cpp:16:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(buffer+1, n+2, fin); ^