#include <stdio.h>int main(){ char a[100][19]; int n; int i,j; int sum; int b[17]={7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2}; char c[11]={'1','0','X','9','8','7','6','5','4','3','2'}; int flag=1; scanf("%d",&n); for(i=0;i<n;i++) scanf("%s", a[i]); for(i=0;i<n;i++){ sum=0; for(j=0;j<17 && a[i][j]-'0'>=0 && a[i][j]-'0'<=9 ;j++){ sum+=b[j]*(a[i][j]-'0'); } if(j!=17 || a[i][17]!=c[sum%11]){ flag=0; printf("%s\n", a[i]);//输出有问题的字符串 } } if(flag==1) printf("All passed"); return 0;}scanf那里的a[i]是什么意思?a已经定义成二维数组了,是省略了行长度吗?默认行长度是0?
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