#include <stdio.h>

void arrfunc (int *myarray, int myarraylen) {
  printf ("Print array in arrfunc before modification.\n"); 
  for(int i = 0; i < myarraylen; i++) {
    printf("Value of myarray[%d] is: %d \n", i, myarray[i]);
  }
  printf ("Now will modify array.\n");
  for(int i = 0; i < myarraylen; i++) {
    myarray[i] = 10*myarray[i];
  }
}

int main() {
  int len = 7;
  int mainarray[] = {11, 22, 33, 44, 55, 66, 77}; // easy initialization

  printf ("Array before function is called.\n");
  int *ind = mainarray;
  for(int i = 0; i < len; i++) {
    printf("Value of myarray[%d] is: %d \n", i, *ind);
    ind++;
  }  
  arrfunc (mainarray, len);
  printf ("Array after function is called.\n");
  ind = mainarray;
  for(int i = 0; i < len; i++) {
    printf("Value of myarray[%d] is: %d \n", i, *ind);
    ind++;
  }  
     
  return 0;  // return all successful
}