#include<stdio.h>
main()
{
    int c[10] = { 0 };
    int i = 0;
    char ch;
    ch = getchar();
    while ((ch=getchar()) != '\n')
    {
        if (ch >= '0'&&ch <= '9')
        {
         c[ch - '0']++;
            }
        i++;
    }
    for (i = 0; i < 10; i++)
    {
         printf("%d-%d\n", i, c[i]);
    }
}

do while

int c[10] = { 0 };
    int i = 0;
    char ch;
    ch = getchar();//这里吃了一个1

就差一点

#include<stdio.h>
main()
{
    int c[10] = { 0 };
    int i = 0;
    char ch;
    //ch = getchar();
   

    while ((ch=getchar()) != '\n')
    {
        if (ch >= '0'&&ch <= '9')
        {
         c[ch - '0']++;
            }
        //i++;
    }
    for (i = 0; i < 10; i++)
    {
         printf("%d-%d\n", i, c[i]);
    }
}

这个程序的意思是让数组里的每个元素加1么