Compilare: user.cpp: In function ‘int main()’: user.cpp:43:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &n, &k); ^ user.cpp: In function ‘void mult(int*, int*, int)’: user.cpp:7:30: warning: ‘t’ may be used uninitialized in this function [-Wmaybe-uninitialized] fin[i]=(t+=A[i]*B)%10; ^