Compilare: user.cpp: In function ‘int main()’: user.cpp:37:31: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(out,"%d\n",c[1][n]); ^ user.cpp:21:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,n,k,p; ^ user.cpp:22:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:24:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&d[i]); ^