C + + Writing delay loops

The purpose is to delay the display

Example:

Long wait = 0;

while (wait<10000)

wait++;

Program example ———— from the C + + primer plus ps149, listing 5.14

#include <iostream>
#include <Ctime>
using namespace Std;
int main ()
{
cout<< "Enter The delay time,in seconds:";
float secs;
cin>>secs;
clock_t delay = secs * CLOCKS_PER_SEC;
cout<< "Starting\a" <<endl;
clock_t start = clock ();
while (clock ()-start<delay)
;
cout<< "Done \a" <<endl;
return 0;
}

C + + Writing delay loops