#include "header.h"

int main(){

  int num[256], i, current;
  unsigned char ch;
  char fname[100];
  FILE *fp;
  time_t t1, t2;
     
   printf("Enter the name of the file:");
   scanf("%s",fname);
   fp=fopen(fname, "r");// Read in an existing file.
   
   time(&t1);// Start timer.
   
   for(i=0;i<256;i++) num[i]=0;// Initialize the number of each character to be 0. 
   
   while((current=fgetc(fp))!=EOF){
     ch = current;
     num[ch]+=1;
     };// When computer gets a character, add one to its number.
   time(&t2); //Stop timer.
   for(i=32;i<127;i++) 
      if(num[i]>0) printf("%c:%d\n",i, num[i]);// Print out each character and its number.
   printf("Use %d seconds.\n",(int)(t2-t1));
   fclose(fp); // Close the file.
  return 0;
}