Compilare: user.cpp: In function ‘void turn(int*, int*)’: user.cpp:28:23: warning: unused variable ‘aux’ [-Wunused-variable] int i, j, nn, mm, aux, gay[210][210]; ^ user.cpp: In function ‘int main()’: user.cpp:145:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &n, &m); ^ user.cpp:148:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%s", &v[i][1]); ^