I.

#include <fstream>
using namespace std;
	ifstream fin("comb.in");
	ofstream fout("comb.out");
int n;
int main()
{
	fin>>n;
    fout<<n;
	fin.close();
	fout.close();
	return 0;
}

II.

#include <fstream>
using namespace std;
long long x; 
int n;
int a[1001];

int main()
{
	freopen("aranj.in","r",stdin);
	freopen("aranj.out","w",stdout);
	scanf("%d%lld",&n,&x);
	int i;
	for (i=1;i<=n;i++)
		scanf("%d",&a[i]);
	for (i=1;i<=n;i++)
		printf("%d ",&a[i]);
	printf("\n");
	return 0;
}

Tipuri citire variabile:
- %d - int
- %c - char
- %s -string
- %ld - long 
- %lld - long long
- %I64 - long long
- %s - char[]
- %f - float
- %lf - double
