Write a program in C plus plus that shows the following series 1 1 2 3 5 8 13 Using for Loop?

Answer 1

void main()

{

int a=0,b=1,c;

clrscr();

printf("%d",a);

printf("%d",b);

for(;c<=20;)

{

c=a+b;

a=b;b=c;

printf("%d",c);

}

getch();

}

Answer 2

#include <iostream>

using namespace std;

int main()

{

int x=0, y=0;

for( int z=1; z<100; z+=x )

{

cout << z;

cout << " ";

x=y;

y=z;

}

cout << endl;

return( 0 );

}

Output:

1 1 2 3 5 8 13 21 34 55 89