/* 一个统计字母（含大小写）出现次数的C程序 */

#include <stdio.h>

int main() {

    char counts[];

    char ch;

    /* initialization */

    for(int i = ; i < sizeof(counts)/sizeof(counts[]); i++) {

        counts[i] = ;

    }

    /* EOF: ctrl+D */

    while((ch = getchar()) != EOF) {

        if(ch >=  && ch <= ){

            counts[ch-]++;

        } else if (ch >=  && ch <= ) {

            counts[ch-+]++;

        }

    }

    for(int i = ; i < ; i++) {

        if(counts[i] != ) {

            printf("%c: %d\n", i+, counts[i]);

        }

    }

    for(int i = ; i < ; i++) {

        if(counts[i] != ) {

            printf("%c: %d\n", i+-, counts[i]);

        }

    }

    return ;

}