lab5 dot c file

#include <stdio.h>
#include <stdlib.h>
void generateNewString(char statement[], int length)
{
    char st2[length];
    srand(time(NULL));
    for(int i=0;i<length;i++){
        st2[i]=statement[rand()%(length+1)];
    }

    printf("str2 is: %s", st2);

}

int main()
{
    int length;
    char arr[20];
    printf("Enter one string with a maximum length of 20:\n");
    scanf("%s",arr);
    printf("length of the new string: \n");
    scanf("%d",&length);
    generateNewString(arr, length);
    return 0;
}