#include <stdio.h>

/* Global variable which will hold our character count. 
** Element 0 will count the number of 'A's etc.*/
int char_count[26] ;

void count_chars(char string[]) 
{
    int cursor = 0;
    char current_char;
    int i;
    /* Initialise our counter array */
    for(i=0; i< 26; i++) {
        char_count[i] = 0;
    }
    while(string[cursor] != '\0') {
	current_char = string[cursor];
	if(current_char >= 'A' && current_char <= 'Z') {
	    /* Character is an upper case letter - count it */
	    char_count[current_char-'A']++;
	} else if(current_char >= 'a' && current_char <= 'z') {
	    /* Character is an lower case letter - count it */
	    char_count[current_char-'a']++;
	}
	cursor++;
    }
}

int main() 
{
    char string1[] = "The quick brown fox jumps over the lazy dog";
    int i;
	
    count_chars(string1);
    for(i=0; i < 26; i++) {
	printf("%c: %d\n", 'A'+i, char_count[i]);
    }
    return 0;
}