no.18.c

中南大学C语言程序设计实习 1 实验一：C语言图形模式的设置 2 实习二：一元函数的图形绘制 3 实习三：二维图形的几何变换 4 实习四：非线性方程求根的二分法 5 实习五

#include "stdio.h"
#include "conio.h"

void printNum(int val)
{     
    switch (val) {
        case 1: printf("壹");
                break;
        case 2: printf("贰");
                break;
        case 3: printf("叁");
                break;
        case 4: printf("肆");
                break;
        case 5: printf("伍");
                break;
        case 6: printf("陆");
                break;
        case 7: printf("柒");
                break;
        case 8: printf("捌");
                break;
        case 9: printf("玖");
                break;
    };
}

void printPos(int pos)
{     
    switch (pos) {
        case -2: printf("离");
                 break; 
        case -1: printf("分");
                break; 
        case 0: printf("角");
                break; 
        case 1: printf("元");
                break; 
        case 2: printf("十");
                break;
        case 3: printf("百");
                break;
        case 4: printf("千");
                break;
        case 5: printf("万");
                break;
    };
}

int numLong(int x)
{
    int n = 0;
    while (x) {
        x = x / 10;
        ++n;
    }
    return n;
}        

void exchange (double x)
{
    double temp;
    int intPart;
    int preval;
    int val = 1, j;
    int in = 1, pos;
    
    intPart = (int)x;    
    
    pos = numLong(x);
    for (j = 1; j < pos; j++) in = in * 10;
    
    while( in ) {
        preval = val;
        val = intPart / in;
        intPart = intPart % in;
        in = in / 10;
        
        if ( preval == 0 && val != 0 ) printf("零"); 
        if ( val != 0 ) {
            printNum(val);
            printPos(pos);
        }    
        --pos;
    }
    temp = x - (int)x;
    while (temp - (int)temp > 10e-6) {
        temp = temp * 10; 
        val = (int)temp % 10;
        if (val) {
            printNum(val); 
            printPos(pos);
        }    
        --pos;
    }      
    printf("整"); 
}

int main()
{
    exchange(12345.67);
    getch();
    return 0;
}