sleep

void sleep( int );

delay programm for given number of seconds

#include<stdio.h>
#include<dos.h>
 
int main( void )
{
   printf("Wait or better sleep for 42 seconds to continue.\n");
   sleep(42);
   printf("Programm execution continued after 42 seconds");
   return 0;
}

  Wait or better sleep for 42 seconds to continue
  .... 42 seconds later
  Programm execution continued after 42 seconds