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大家帮忙看一下 为什么总是runtime error

Posted by qizhe at 2008-10-27 20:55:32 on Problem 2498
#include <iostream>
#include <cstring>
using namespace std;
int main()
{
	char a[1000][10]={" "};
	int n,i=0,j=0,k,m=0,b[1000][10]={0},sum=0,sum1=0;
	cin>>n;
	for(i=0;i<n;i++)
		cin>>a[i];

	for(i=0;i<n;i++)
		for(j=0;j<10;j++)
			b[i][j]=-1;

	for(i=0;i<n;i++)
	{
		for(j=0;j<strlen(a[i]);j++)
		{
			if(a[i][j]!='?') b[i][j]=a[i][j]-'0';
			else if(a[i][j]=='?') k=j;
		
		}
		sum=0;
		for(j=0;j<strlen(a[i]);j++)
			if(j!=k)
			{
				if(j%3==0) sum+=b[i][j]*9;
				if(j%3==1) sum+=b[i][j]*7;
				if(j%3==2) sum+=b[i][j]*3;
			}
		sum1=sum;
		for(m=0;m<10;m++)
		{
			sum=sum1;
			if(k%3==0) sum+=m*9;
			if(k%3==1) sum+=m*7;
			if(k%3==2) sum+=m*3;
			if(sum%5==0&&sum%2==0) {b[i][k]=m;break;}
		}
		
		cout<<"Scenario #"<<i+1<<":\n";
		for(j=0;j<strlen(a[i]);j++)
			cout<<b[i][j];
		cout<<"\n\n";
	}
        return 0;
}


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