1. PROGRAMACION G++
1)
# include<iostream>
# include <stdio.h>
using namespace std;
int main ()
{
Clrscr();
for(int =1;i<=20;++)
{
cout<<i;
if(i%3==0)cout<<”hola1”<<endl;
else cout<<”hola2”<<endl;
}
Getch();
Return 0;
}
2)
# include <iostream>
# include <stdio.h>
using namespace std;
int main ()
{
Int A,B,C;
A=20;B=30;C=60;
printf("n%d+ %d - %d + 100 =%d “,A,B,C (A+B+C-100));
getch();
}

2. 3)
# include <iostream>
# include <stdio.h>
using namespace std;
int main ()
{
Inta,b;
a=6;b=3;
printf("(%d - %d) (%d + %d) = %d “,a,b, ((a - b) * (a + b)) );
getch();
}
4)

3. 5)
7)

4. 8)
9)
10)

5. 15)
18)
19)

6. 20)
# include <iostream>
# include <stdio.h>
using namespace std;
int main ()
{
int vect1[10];
intx,y,aux;
aux=0;
for (x=0;x<=10-1;x++)
{
for(y=x+1;y<10-1;y++)
{
if (vect1[x]<=vect1[y])
{
aux=vect1[x];
vect1[x]=vect1[y];
vect1[y]=aux;
}
}
}
}
21)