How do you do an alternate numbers in c plus plus?

Answer 1

If I'm understanding correctly, you want to alternate between two numbers back and forth?

If so, try something like this:

/* num1 is the number to be alternated

and alt is the amount of times do so */

int num1 = 1;

int alt;

/* Get number of times to alternate */

cout << "Enter number of times to alternate: ";

cin >> alt;

/* Perform alternation and cout result each time */

for (int i = 0; i < alt; i++)

{

num1 *= -1; // in this case, alternating positive/negative

cout << num1 << endl;

}

Note that you can change the "num1 *= -1" to whatever you need.

For example, to alternate between 50 and 25, you would put

/* Starting with 50, then alternating to 25 for the first cout */

num1 = 50;

/* On odd times through (1,3,5), ADD 25;

On even times through (0,2,4...etc) SUBTRACT 25 */

if ( (i % 2) == 1)

{

num1 += 25;

}

else

{

num1 -= 25;

}