x=rand();

[ddimit02]

i want to use rand function for finding random number with 4 digits how can i do that
im only knowing how to find the maximum number which is x=rand()%10000 but how can i tell it for finding minimum number 1000

[CommonTater]

#include <time.h>
#include <stdio.h>

int main (void)
   {  int x;    
       int y;

       srand(Time(0));  // seed the random number generator.
       
       for( y = 0; y <  100; y++)
         {  

            x = (rand() % 9000) + 1000;    // get random number in range 1000 - 9999

            printf("%d\t", x); }

     return 0; }

[ddimit02]

is any other combination for this? x = (rand() % 9000) + 1000;
or is the only way i can do it

[iMalc]

There are plenty of ways to do it. One could even say that there are an infinite number of ways to do it.

Here's it done using the rejection method, which is not biased compared to the above:

int x;
do {
    x = rand();
} while (x >= (RAND_MAX / 9000) * 9000);
x = x % 9000 + 1000;

As you can see it takes much more code so you may be perfectly happy with the first method.

[CommonTater]

is any other combination for this? x = (rand() % 9000) + 1000;
or is the only way i can do it

This is programming... there is *always* more than one solution.

[Babkockdood]

is any other combination for this? x = (rand() % 9000) + 1000;
or is the only way i can do it

The % is the modulo operator. So it assigns x to the remainder of the output of rand() divided by 9000, plus 1000. rand() % 9000 will give you a random number between 0 and 9000. Adding 1000 to that ensures that the random number is between 10,000 and 1000.