Why won't my strings work?

scratchpad.c

#include <stdio.h>

void blank_string (char *s) {
  
  int i = 0;
  for (i = 0; i < 10; i = i + 1) {
    *(s + i) = "5";
  }
  *(s + 10) = "\0";
}


int main (int argc, char const *argv[]) {
  char myarray[11];
  blank_string(myarray);
  printf("%s", myarray); 
  return(0);
}

/* Output
scratchpad.c: In function ‘blank_string’:
scratchpad.c:7: warning: assignment makes integer from pointer without a cast
scratchpad.c:9: warning: assignment makes integer from pointer without a cast
$$$$$$$$$$)
*/