Thread: Having a problem with random numbers in array

Hello everyone ..

I've got a problem with the random numbers in the array .. because it's give me a big numbers not small numbers and it doesn't change the numbers !! why ?? **Sorry for my English**

This is my code :

Code:

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


int main()
{
 
    int arr[10];
    int sum = 0;
 
     for (int i=0; i<10; i++){
          arr[1] = rand() % 10;
        printf("arr[%d] = %d\n" , i , arr[i]);
    }
    for (int i=0; i<10; i++) {
        sum += arr[i];
    }


    printf("the sum = %d", sum);


return 0;
}

Originally Posted by Man_Onaizah

because it's give me a big numbers not small numbers ...

You're not correctly assigning the random values to the array:

Code:

arr[1] = rand() % 10;

You want "i" here, not "1".

Originally Posted by Man_Onaizah

... and it doesn't change the numbers !! why ??

You need to seed the PRNG to get different values each run. See the FAQ: FAQ > Generate random numbers? - Cprogramming.com

Originally Posted by Matticus

You're not correctly assigning the random values to the array:

Code:

arr[1] = rand() % 10;

You want "i" here, not "1".



You need to seed the PRNG to get different values each run. See the FAQ: FAQ > Generate random numbers? - Cprogramming.com

thaaaaaaaank u so much bro <3