Coin Tossing

Program below simulate coin tossing.The program will "toss" a coin 100 times and print each results and finally print the frequency of each outcome.
[ Note: Each side of the coin appear approximately half the time for a total of approximately 50 heads and 50 tails. ]

/*
   title: tossingCoin
   author: aeriqusyairi
   date: Jan24 2012
*/
#include<stdio.h>
#include<stdlib.h>

int flip(void);

int main(){
   int countHead = 0, countTail = 0, i, x;
   
   for(i = 0; i < 100; i++){
      x = flip();
      if(x == 1){
         printf("Heads\n");
         countHead++;     
      }else if(x == 0){
         printf("Tails\n");
         countTail++;      
      }         
   }       
   
   printf("TOTAL HEAD: %d\nTOTAL TAIL: %d\n", countHead, countTail);
   
   system("pause");
   return 0; 
}

int flip(void){
   
   return rand() % 2;     
}