程序（部分）：
#include <reg51.h>
#include "lcd.h"

#define LCD1602_WriteCom(c) LcdWriteCom(c)
#define LCD1602_PutChar(c) LcdWriteData(c)
#define LCD1602_Init() LcdInit()

void LCD1602_Goto(unsigned char x, unsigned char y)
{
    LCD1602_WriteCom(0x80 + 0x40 * y + x);
}

void LCD1602_Puts(char* str)
{
    for (; *str != '\0'; str++)
        LCD1602_PutChar(*str);
}

unsigned char strlen(char *str)
{
    unsigned char len = 0;
    for (; *str != '\0'; str++, len++);
    return len;
}

void insert(char *s1, char *s2)
{
    unsigned char f = 0;
    unsigned char len1 = strlen(s1);
    unsigned char len2 = strlen(s2);
    char *p1 = s1;
    char *p2 = s1 + len1 - 1;
    while (*p1 != '\0' && *p1 != *s2)
        p1++;
    if (*p1 != '\0')
    {
        for (; p2 > p1; p2--)
            *(p2 + len2 - 1) = *p2;
        f = 1;
    }
    while (*s2)
        *p1++ = *s2++;
    *(s1 + len1 + len2 - f) = '\0';
}

void main()
{
    char s1[50] = "abcdef";
    char *s2 = "d45";
   
    LCD1602_Init();
    LCD1602_Goto(0, 0);
    LCD1602_Puts(s1);
    LCD1602_Puts(",");
    LCD1602_Puts(s2);
    LCD1602_PutChar(':');
   
    insert(s1, s2);
    LCD1602_Goto(0, 1);
    LCD1602_Puts(s1);
    while (1);
}

运行效果：

这次移植，可以直接完全照抄书上的void insert(char *s1, char *s2)函数的代码，一点也不需要改动。因为单片机也是用的C语言。

结构体的使用：
typedef struct {
    unsigned char x;
    unsigned char y;
    char *str;
} LCDText;

void LCD1602_Put(LCDText *text)
{
    LCD1602_Goto(text->x, text->y);
    LCD1602_Puts(text->str);
}

void main()
{
    char s1[50] = "abcdef";
    char *s2 = "d45";
    LCDText text;
   
    LCD1602_Init();
    LCD1602_Goto(0, 0);
    LCD1602_Puts(s1);
    LCD1602_PutChar(',');
    LCD1602_Puts(s2);
    LCD1602_PutChar(':');
   
    insert(s1, s2);
    text.x = 0;
    text.y = 1;
    text.str = s1;
    LCD1602_Put(&text);
    while (1);
}