Compilare: user.cpp: In function ‘int main()’: user.cpp:21:12: warning: unused variable ‘n’ [-Wunused-variable] int t, n, i, j, in[310], out[310], order[310], aux, value; ^ user.cpp:23:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( IN, "%d", &t ); ^ user.cpp:26:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d", &in[i] ); ^