第二章第十一题（改正后）



#include<stdio.h>
int main()
{
 int a=1;
 int b=1;
 int s;
 while(a<=9)
 {
  while(b<=9)
  {
   s=a*b;
   printf("%d*%d=%d  ",a,b,s);
   b=b+1;
  }
  printf("\n");
  a=a+1;
  b=a;                                                                                                                                                                                                         
 }
 return 0;
}