C语言：输出数字各个位的数字及和

#include <stdio.h>
int main()
{
    char sh[13][5]={"个","十","百","千","万","十万","百万","千万","亿","十亿","百亿","千亿","万亿"};
//    int cc=0;
//    for(cc=0;cc<=13;cc++)
//    {
//        printf("%s\n",sh[cc]);
//    }
    int bla,sum,shu;
    scanf("%d",&bla);
    sum=0;
    int aa=0;
    while (bla!=0)
    {
        shu=bla%10;
        bla=bla/10;
        sum=sum+shu;
        printf("数字的%4s位数为%5d\n",sh[aa],shu);
        aa++;

    }
    printf("\n%d",sum);

    getchar();
}

结果：

修改相应行：

char sh[13][5]={"个","十","百","千","万","十万","百万","千万","亿","十亿","百亿","千亿","万亿"};

改为：

char sh[13][4]={"个","十","百","千","万","十万","百万","千万","亿","十亿","百亿","千亿","万亿"};

运行结果：

分析：数组【4】【6】差别