基于c语言的九九乘法表答题系统

用C语言完成：先从屏幕输出算式，等待学生从键盘输入答案，若回答正确，则打印“Right！”，然后询问是否继续答题；若回答是“Y”则继续答题，若回答“N”则退出答题。统计并输出共出了多少题，做对了多少题？总分是多少

#include<stdlib.h>
#include<stdio.h>
#include<time.h>
int main()
{
    srand((unsigned)time(NULL));//选取种子文件
    int a,b,c,m=0,n=0;
    a = rand()%9+1;
    b = rand()%9+1;
    while(1)
    {
          printf("%d * %d = ",a,b);
          scanf("%d",&c);
          getchar();
          if(c==a*b)
          {
              printf("Right!");
              m++;
          }
          else
              printf("Error!");
          n++;
          printf("继续请输入Y，推出请输入N：");
          char c = getchar();
          if(c=='N')
              break;
          a = rand()%9+1;
          b = rand()%9+1;
    }
    printf("总共%d题，做对%d题。总分为:%d",n,m,(int)(m*100.0/n));
    return 0;
}

代码如下，如有帮助，请帮忙采纳一下，谢谢。

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
int main()
{
    int i,j,c;
    char ch;
    int flag = 0;
    int nTotal = 0,nRight = 0;
    srand((unsigned int)time(NULL));

    while (1)
    {
        i = rand()%9 +1;
        j = rand()%9+1;
        printf("%d * %d = ",i,j);
        scanf("%d",&c);
        nTotal++;
        if(c == i*j)
        {
            nRight++;
            printf("Right\n");
        }
        else
            printf("Wrong\n");
        printf("是否继续答题（Y/N）:");
        getchar();  //不要少了这一行
        ch = getchar();
        if(ch == 'N')
            break;
        
    }

    
    printf("总共出了%d道题，作对了%d道题，总分%d",nTotal,nRight,nRight);
    return 0;
}