编写程序来实现实现strcat()功能

strcat(字符数组1，字符串2)

   字符串2的内容复制连接在字符数组1的后面，其返回值为字符数组1的地址

 

 

/*
strcat(字符数组1，字符串2)
字符串2的内容复制连接在字符数组1的后面，其返回值为字符数组1的地址
编写函数实现strcat()功能
*/
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

void my_strcat(char str1[], char str2[])
{
    int nNum1, nNum2;
    nNum1 = strlen(str1);
    nNum2 = strlen(str2);
    for (int i = 0; i < nNum2; i++)
    {
        str1[nNum1 + i] = str2[i];
    }
}

int main()
{
    char strAry1[30] = "I like";
    char strAry2[30] = "beijing";

    my_strcat(strAry1, strAry2);
    puts(strAry1);

    strcat(strAry1, strAry2);
    puts(strAry1);

    my_strcat(strAry1, strAry2);
    puts(strAry1);

    system("pause");
    return 0;
}