高精度小数

程序只验证了样例

#include<stdio.h>

int q, r;        //全局变量 
int div(int a, int b);
int main(void)
{
    int a, b;
    int count = 0;
    
    scanf("%d/%d", &a, &b);
    printf("0.");
    do
    {
        div(a, b);
        printf("%d", q);
        count++;
        if (count == 200)
        {
            break;
        }
        a = r;
    } while(r != 0);            
} 

int div(int a, int b)
{
    q = a * 10 / b;
    r = a * 10 % b;
}