How loops can be beneficial in a program?

Answer 1

you use loops to draw out information from an array or a vector. Also they can be used to count up or down from any giving number.

#include <iostream>

using namespace std;

int main()

{

short a = 1;

short b = 1;

short c = 2;

//do

while (a && b && c != 34);

{

a = c + b;

cout << a << "\n";

b = a + c;

cout << b << "\n";

c = b + a;

cout << c << "\n";

}//while (a && b && c != 34);

return 0;

}

the output of this program would be

3

5

8

13

21

34

if i was to rewrite this program with out the loop, i would have to write the body of the loop

a = c + b;

cout << a << "\n";

b = a + c;

cout << b << "\n";

c = b + a;

cout << c << "\n";

over and over again until i reached the number 34. its adding 1 + 1 = 2

2+1=3, 3+2=5 and so on, that's how the program is reaching 34.