Compilare: user.cpp: In function ‘int main()’: user.cpp:67:35: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘int’ [-Wformat=] if(n==0) fprintf(out, "%lld\n",x); // out<<x; ^ user.cpp:68:41: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘int’ [-Wformat=] else if (n==1) fprintf(out, "%lld\n",y); // out<<y; ^ user.cpp:69:41: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘int’ [-Wformat=] else if (n==2) fprintf(out, "%lld\n",z); // out<<z; ^ user.cpp:49:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &t); ^ user.cpp:54:66: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d %d %d %d %ld", &x, &y, &z, &a, &b, &c, &n); //ct[0][0], ct[1][0], ct[2][0], &n); ^