Compilare: main.cpp: In function 'int main()': main.cpp:2:155: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] using namespace std;ifstream f("flori4.in");ofstream g("flori4.out");int main(){int i,n;f>>n;int a=0,b=1,c;for(i=2;i<=n+2;i++){c=(a+b)%9001;a=b;b=c;}g<<(c+9000)%9001;} ~~^~~~~~