I tried the program and this appeared many times (warning: format ‘%s’ expects argument of type ‘char *’, but argument 3 has type ‘int’ [-Wformat])

My goal is to make a game where a player is required to type a set of words from a file but the words should appear only one by one and the user should type every time the word is displayed. I'm also trying to make a stopwatch timer that starts as soon as the player chooses the option start game but I think it's hard so my main goal for now is to make the game without the timer. The function in the bottom should make a file which contains highscores.

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


int main(){
       FILE *fp;
       char go, player[30];
       char word[15],typed[15];
       clock_t start_t, end_t, total_t;
       int choice, i=0;
       
       printf("Welcome to the fastest typer game!\n");
       printf("Input name of player:");
       scanf("%s",player);
       printf("Are you ready?\n\t1. Play Game\n\t2. High Scorers\n\t3. Exit");
       scanf("%i",&choice);
       switch (choice){
       case 1: start_t = clock();
       		   for(i =0;i<10000000; i++)
       		   {
       		   }
       		   //File Read
      			 fp=fopen("words.txt","r");
      			 do{
      			 fscanf(fp,"%s \n", word[i]);
      			 do{
      			 printf("Type the word:\n %s", word[i]);
      			 scanf("%s",typed[i]);
      			 }while(typed[i]!=word[i]);
      			 i++;
      			 }while(!feof(fp));
      			 fclose(fp);
      			 end_t = clock();
      			 total_t = (double)(end_t - start_t) / CLOCKS_PER_SEC;
  	   			 printf("Total time: %f\n", total_t );
      			 highScore(player);
		case 2: fp=fopen("highscore.text","r");
				fscanf(fp,"%s \n", player);
				printf("%s", player);
		case 3: break;
		default: printf("Not in the choices, try again: ");
				 scanf("%i",choice);
				}
		}
void highScore(char player){
     //File Write
     FILE *fp;
     fp=fopen("highscore.text","a");
     fprintf(fp,"%s\n", player);
     fclose(fp);
     }