1. Zad
#include<iostream>
using namespace std;

int main(){
int i;

cout<<" ";
cin>>i;

if(i>1){
cout<<"10";
}
else
1==1*8;

return 0;
}
---------------------------------------------
2. Zad
#include<iostream>
using namespace std;

int main(){
int a;
int b;
int y;

cout<<" ";
cin>>a;
cout<<" ";
cin>>b;

if(b==0){
    cout<<" ";
}
else{
    y=a/b;
cout<<y;
}

return 0;
}

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3. Zad
#include<iostream>
using namespace std;

int main(){
float d1;
cout<<" "<<endl<<" "<<endl;
cout<<" ";
cin>>d1;
cout<<" "<<d1*2.54;

return 0;
}
--------------------------------------------
4. Zad
#include<iostream>
using namespace std;

int main(){
 float d1;
cout<<" "<<endl;
cout<<" ";
cin>>d1;
cout<<" "<<d1*3.89;

return 0;
}
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