博客

#include<stdio.h>  
#include<string.h>  
char num[1100];  
int main()  
{  
    int len;  
    int i,j,sum;  
    while(scanf("%s",num)!=EOF)  
    {  
        len=strlen(num);  
        sum=0;  
        if(num[0]=='-')  
            j=1;  
        else  
            j=0;  
        for(i=j;i<len;i++)  
            sum+=num[i]-'0';  
        if(j==1)  
            printf("%d\n",sum*-1);  
        else  
            printf("%d\n",sum);  
    }  
    return 0;  
}