Compilare: user.cpp: In function ‘int main()’: user.cpp:52:43: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf (fout, "%d ", matrez.mat[3][3]) ; ^ user.cpp:33:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &t ) ; ^ user.cpp:35:65: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d%d%d%d%d%d", &x, &y, &z, &a, &b, &c, &n ) ; ^