Compilare: user.cpp: In function ‘int main()’: user.cpp:24:42: warning: format ‘%n’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=] if (c==k-1) fprintf (g, "%n", a[k]); ^ user.cpp:30:31: warning: format ‘%n’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=] fprintf (g, "%n", c); ^ user.cpp:58:37: warning: format ‘%n’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=] fprintf (g, "%n\n%n", lmax,nr); ^ user.cpp:58:37: warning: format ‘%n’ expects argument of type ‘int*’, but argument 4 has type ‘int’ [-Wformat=] user.cpp:14:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%n%n%n", &p,&n,&k); ^ user.cpp:16:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%n", &a[i]); ^