Compilare: user.cpp: In function ‘void dfcalc(int, int)’: user.cpp:53:9: warning: unused variable ‘aux’ [-Wunused-variable] int aux = tata[nod]; ^ user.cpp: In function ‘int main()’: user.cpp:68:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(re, "%d %d", &n, &k); ^ user.cpp:72:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(re, "%d %d", &a, &b); ^ user.cpp:77:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(re, "%d", &r[i]); ^