Question

Rezolvați in C++. Toate problemele

Answer 1

#include <iostream>

using namespace std;

int main()

{int n,x,i,nr=0,a;

cin>>n;

for (i=1;i<=n;i++)

{cin>>a;

if (a%13==0) nr++;

}

cout<<nr;

}

2. #include <iostream>

#include <fstream>

using namespace std;

ifstream f("numere.txt");

int main()

{int n,x,i,s,nr;

float ma;

f>>n;

nr=0;

for(i=1;i<=n;i++)

{f>>x;

if (x>=0) {s=s+x; nr++;}

}

if (nr==0) cout<<"NU EXISTA";

else {ma=s/nr;cout<<ma;}

}

 

3.#include <iostream>

#include <fstream>

using namespace std;

ifstream f("numere.txt");

int main()

{int n,i,nr;

float x;

nr=0;

f>>n;

for (i=1;i<=n;i++)

{f>>x;

if (int(x)==x) nr++;}

if (nr>=10) cout<<"DA";

else cout<<"NU";

}