Head or Tails game

Hello out there:

I need some help. This is the Dev-C++ error message:

Compiler: Default compiler
Building Makefile: "G:\C programming\HW5\Makefile.win"
Executing make clean
rm -f get.o main.o play.o prnt.o report_win_loss.o chapt5prob11secondattempt.a


ANY help will be appreciated!

I believe I don't have any syntax errors but here is the code in case someone wants to take a look at it: (This is about six files).

Code:

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

#define MAXWORD 100

char get_call_from_user(void);
void play(int how_many);
void prn_final_report(int win, int lose, int how_many);
void prn_instructions(void);
void report_a_win(void);
void report_a_loss(void);
char toss(void);

#include "heads_or_tails.h"

int main(void)
{
    char ans;
    int no_of_plays;
   
    printf("\n"
      "THE GAME OF HEADS OR TAILS\n"
      "\n"
      "Do you want instructions?  ");
    scanf(" %c", &ans);
    putchar('\n');
    if (ans == 'y' || ans == 'Y')
      prn_instructions();
    printf("How many times do you want to play?  ");
    scanf("%d", & no_of_plays);
    putchar('\n');
    play( no_of_plays);
    system("pause");
    return 0;
}     
 
#include "heads_or_tails.h"
#include <ctype.h>

char get_call_from_user(void)
{
    char guess;              /* h = heads,  t = tails */
   
    guess = getchar();
   
    do {
        printf("Call it:  ");
               
        if (getchar()!= 1 ) {
          printf("\nSORRY: Severe input error - bye!\n\n");
          exit(1);
        }
             
        if (guess != ('H' || 'h') && guess != ('T' || 't' ) ) {
          printf("\n%s\n\n",
              "ERROR: Type h for heads, t for tails.");
        }
    } while (guess != ('H' || 'h') && guess != ('T' || 't') ) ;
    if (isupper(guess))
      putchar(tolower(guess));
    return guess;
}

#include "heads_or_tails.h"

void play(int how_many)    /* machine tosses, user calls */
{
    int      i, lose = 0, win = 0;
    char    coin;
   
    for (i = 0; i < how_many; ++i) {
        coin = toss();
        if (get_call_from_user() == coin) {
            ++win;
            report_a_win();
        }
        else {
              ++lose;
              report_a_loss();
        }
    }
    prn_final_report(win, lose, how_many);
    system("pause");
}

char toss(void)
{
   
    int random;
   
    random = (rand() % 2);
   
    if (random == 1)
        return 't';
    if (random == 0)
      return 'h';   
        /* random : 0 = heads,  1 = tails */


}

#include "heads_or_tails.h"

void prn_instructions(void)
{
    printf("%s\n",
        "This is the game of calling heads or tails.\n"
        "I will flip a coin; you call it. If you\n"
        "call it correctly, you win; otherwise,\n"
        "I win.\n"
        "\n"
        "As I toss the (simulated) coin, I will\n"
        "tell you to \"call it.\"  To call heads,\n"
        "type h; to call tails, type t.\n"
        "\n");
}

void prn_final_report(int win, int lose, int how_many)
{
    printf("\n%s\n%s%3d\n%s%3d\n%s%3d\n\n",
        "FINAL REPORT:",
        "  Number of games that you won:  ", win,
        "  Number of games that you lost: ", lose,
        "  Total number of games:        ", how_many);
}

#include "heads_or_tails.h"

void report_a_win(void)
{
    printf("%s\n", "You win!");
}

void report_a_loss(void)
{
    printf("%s\n", "You lose!");
}

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This is a lot of files; I may have missed one.

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