How to pick a random value from an array, when the value position to pick is in cell number: 2,5,8,11....

Question

I have array of string:

string he="You may not be interested in war, but war is interested in you." ;

and I wan't to pick the value in 2 position ,5 position and 8 position, ....

with random number in every pick.

Answer 1

I don't understand what you mean.

Please rephrase.

Answer 2

I wan't in random to get the numbers 2,5,8,11,14,...   until the last item in the string

the jump is always in 3.

for example:

I can get in first iteration:

8

and in the second iteration I will get:

2

that way I will gain acess to he[2].

Answer 3

			std::string he="You may not be interested in war, but war is interested in you." ;
			int r;
			do
			{
				r = (rand () % he.length ()) / 3 * 3 + 2;
			} while (r >= he.length ()); // make sure we haven't jumped off the end
			printf ("%d\n", r);

Answer 4

Use rand() function.For getting range of values use rand()%<RangeMaximum>. This will return 0- RangeMaximum.

http://www.cplusplus.com/reference/clibrary/cstdlib/rand/

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Thanks, Renjith V R