start_of_my_way

#include <stdio.h>
#define LIM 100

int main() 
{
  char symbols[LIM];
  int frequency[LIM];
  int i;
  for (i = 0; i < LIM; i++)
    frequency[i] = 0;

  int c;
  int j = 0;
  int exist;
  while ((c = getchar()) != EOF) {
    for (i = 0; i < LIM; i++){
      if (c == symbols[i]){ 
      exist = 1;
      break;
      }
      else  {
        exist = 0;
      }
    }
    if (exist == 1)
      frequency[i]++;
    else if (c != ' ' && c != '\t' && c != '\n'){ 
        symbols[j] = c;
        frequency[j]++;
        j++;
  }
  }

  for (i = 0; i < j; i++)
    printf("\n%c = %d", symbols[i], frequency[i]);
  printf("\n");
}