#include <stdio.h>
#include <stdlib.h>
int main()
{
int x1,x2;
char sum[1000000];
int TimesNumber = 0;
int LineNumber = 0;
int LineRegister = 0;
int i;
for(i = 0 ; i < 1000000 ; i++) sum[i] = 0;
scanf("%d",&TimesNumber);
while(TimesNumber)
{
scanf("%d",&LineNumber);
LineRegister = LineNumber;
while(LineNumber){
scanf("%d%d",&x1,&x2);
sum[LineRegister-LineNumber+1] = x1 + x2;
LineNumber -- ;
}
for(i=LineRegister ; i > 0 ; i --){
sum[i-1] += (sum[i] > 9) ? 1 : 0;
sum[i] -= (sum[i] > 9) ? 10 : 0;
}
for(i=(sum[0]) ? 0 : 1 ; i <= LineRegister ; i++)printf("%d",sum[i]);
for(i = LineRegister ; i >= 0 ; i -- ) sum[i] = 0;
printf("\n\n");
TimesNumber --;
}
return 0;
}
以上是我的程式碼,不明原因一直出現WA ,請大神幫我解答