技術標籤：c語言c語言

#include <stdio.h>
int main()
{
    int i, temp;
    int a[26] = {0};
    char ch;
    while ((ch = getchar()) != '\n')
    {
        if (ch >= 'A' && ch <= 'Z')
        {
            ch = ch + 32;
            /* code */
        }
        if (ch >= 'a' && ch <=
 
 'z')
        {
            a[ch - 'a']++;
            /* code */
        }

        /* code */
    }
    for (i = 0; i < 26; i++)
    {
        if (a[i] != 0)
        {
            printf("count of %c is %d\n", 'a' + i, a[i]);
            /* code */
        }
        /* code */
    }
    return 0
 
;
}