Thread: Problem with srand(time(NULL))

Hai! I want to make a Concentration game using C. But, I have a some error when I try to compile it. it says: "Conversion may lose significant digits in function main()". the error is in: "srand(time(NULL));"

This is my code:

Code:

#include <stdio.h>
#include <stdlib.h>

main()
{
 char cYesNo = '\0';
 int iResp1 = 0;
 int iResp2 = 0;
 int iResp3 = 0;
 int iElapsedTime = 0;
 int iCurrentTime = 0;
 int iRandomNum = 0;
 int i1 = 0;
 int i2 = 0;
 int i3 = 0;

 srand(time(NULL));

  printf("\nPlay a game of Concentration? (y or n): ");
  scanf("%c", &cYesNo);

  if (cYesNo == 'y' || cYesNo == 'Y') {
     i1 = rand() % 100;
     i2 = rand() % 100;
     i3 = rand() % 100;

     printf("\nConcentrate on the next three numbers\n");
     printf("\n%d\t%d\t%d\n", i1, i2, i3);

     iCurrentTime = time(NULL);
     do{
          iElapsedTime = time(NULL);
      } while((iElapsedTime - iCurrentTime) < 3);//end do while loop

     system("clear");

     printf("\nEnter each # separated with one space: ");
     scanf("%d%d%d", &iResp1, &iResp2, &iResp3);

     if(i1 == iResp1 && i2 == iResp2 && i3 == iResp3)
         printf("\nCongratulations!\n");
    else
         printf("\nSorry, correct numbers were %d %d %d\n", i1, i2, i3); 

  }//end if
}//end main function

Can someone help me to solve this error? I'm using Turbo C++ 4.5. Thanks!

1) you need to #include <time.h>

2) you need to get a more up to date compiler... TC++ hasn't been maintained in years and has always been terribly non-standard.

Thanks, It solve my problem. And thanks for the recomendation.