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


void print_histogram(char string[]);

int main(int argc, char *argv[])
{
	char test[] = "I am a test and im diggin a test... diggy diggy test...";
	printf("%s\n",test);
	print_histogram(test);
	return 0;
}

void print_histogram(char string[]){
	char num_letters['z' - 'a'];
	for(char i = 0; i <= 'z' - 'a'; i++){
		num_letters[i] = 0;
	}
	char i = 0;
	while(string[i] != '\0'){
		if(string[i] >= 'a' && string[i] <= 'z'){
			num_letters[string[i]-'a']++;
		}
		i++;
	}

	for(char i = 0; i <= 'z' - 'a'; i++){
		if(num_letters[i] != 0){
			printf("%c -> %d\n", i + 'a', num_letters[i]);
		}
	}

}