hdoj1002——大整数相加

#include<stdio.h>
#include<string.h>
#include <process.h>
#define NM 10000
int main()
{
    char a[NM],b[NM];
    int c[NM+1],i,j,n,l,la,lb,k;
    scanf("%d",&n);
    for(i=1;i<=n;i++){
        scanf("%s%s",a,b);
        memset(c,0,(NM+1)*sizeof(int));
        la=strlen(a);
        lb=strlen(b);
        l=la>lb?la:lb;
        for(j=la-1,k=0;j>=0;j--) c[k++]+=a[j]-'0';
        for(j=lb-1,k=0;j>=0;j--) c[k++]+=b[j]-'0';
        for(j=0;j<l;j++){
            c[j+1]+=c[j]/10;
            c[j]%=10;
        }
        if(c[j]) l++;
        printf("Case %d:\n",i);
        printf("%s + %s = ",a,b);
        for(j=l-1;j>=0;j--) printf("%d",c[j]);
        printf("\n");
        if(i<n) printf("\n");
    }
    /*system("Pause");*/
    return 0;