Compilare: user.cpp: In function ‘int main()’: user.cpp:18:21: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(f,"%d",&n); ^ user.cpp:24:44: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for(j=(((i*i)<<1) + (i<<1)); (j<<1 +1)<=nmax; j+=(i<<1)+1 ) ^ user.cpp:34:24: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(g,"%I64d",n); ^ user.cpp:18:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^