#include <stdio.h>
//最大的精度
#define MAX_LENGTH 120
//计算商
int GetFactor(int a, int b)
{
return a / b;
}
//计算余数
int GetRemainder(int a, int b)
{
return a - (a/b * b);
}
//是否整除
bool IsAliquot(int a, int b)
{
bool ret = false;
if(a%b == 0)
{
ret = true;
}
return ret;
}
//模拟竖式计算
void Division(int a, int b, int precision, int ans[MAX_LENGTH])
{
if(precision > MAX_LENGTH)
{
return;
}
int i=0;
for(i=0; i<MAX_LENGTH; i++)
{
ans[i] = 0;
}
int calA = a, calB = b;
ans[0] = GetFactor(calA, calB);
//模拟竖式计算
for(i=1; i<=precision; i++)
{
if(IsAliquot(calA, calB) == true)//已经整除,不需要再继续进行下去
{
break;
}
calA = GetRemainder(calA, calB);
calA *= 10;
ans[i] = GetFactor(calA, calB);
}
}
void main()
{
int ans[MAX_LENGTH] = {0};
int a = 20;
int b = 3;
int c = 20;
if (c > MAX_LENGTH)
{
return;
}
//计算
Division(a, b, c, ans);
printf("%d / %d , the answer is:(precision:%d)\n",a, b, c);
printf("%d . ",ans[0]);
int i = 0;
for(i=1; i<=c ; i++)
{
printf("%d",ans[i]);
if(i%10==0)
{
printf(" ");
}
}
printf("\n");
printf("Calculation finished!\n");
}
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