四则运算

int number_jia(int a,int b);
int number_jian(int a,int b);
int number_cheng(int a,int b);
int number_chu(int a,int b);
int suijishu();

int main()
{
int count;
int yunsuan=1;
int i;

char yunsuanfu[4]={'+','-','*','/'};

int num1=1,num2=1;

int input_result;

int score=0;

int (*pfun[4])(int,int)={number_jia,number_jian,number_cheng,number_chu};

char jixu='y';

while(1)
{
if(tolower(jixu)!='y')
break;

printf("输入题目数量 ");
scanf("%d",&count);

printf("选择要进行的运算 1:加法 2:减法 3:乘法 4:除法 ");
scanf("%d",&yunsuan);

yunsuan<=4?yunsuan:1;

for(i=0;i<count;i++)
{

num1=suijishu();     
num2=suijishu();

    printf("
%d%c%d=",num1,yunsuanfu[yunsuan-1],num2);

    scanf("%d",&input_result);


  if(input_result==(pfun[yunsuan-1])(num1,num2))
   score+=2;

}

printf("%s你好你一共得分%d ",score);

printf("是否继续 y:继续");

scanf(" %c",&jixu);
}

 return 0;

}

int suijishu()
{
srand(time(NULL)-1);
return rand()%100;

}
int number_jia(int a,int b)
{

return a+b;
}

int number_jian(int a,int b)
{

return a-b;
}
int number_cheng(int a,int b)
{

return a*b;
}
int number_chu(int a,int b)
{

if(b!=0)

return a+b;
else
return 0;
}