编写函数模拟strcpy()函数功能

strcpy(字符数组1，字符串2)

strcpy( )用于将字符串2复制到字符数组1中

 

/*
strcpy(字符数组1，字符串2)
strcpy( )用于将字符串2复制到字符数组1中

模拟strcpy()函数功能
*/
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
#include<stdlib.h>

void my_strcpy(char str1[], char str2[])
{
    int nNum;
    str1[30] = { 0 };
    nNum = strlen(str2);
    for (int i = 0; i < nNum; i++)
    {
        str1[i] = str2[i];
    }
    str1[30] = '\0';
}

int main()
{
    char strAry1[30] = "I love you I love you I love";
    char strAry2[] = "I like C language";
    puts(strAry1);

    strcpy(strAry1, strAry2);
    puts(strAry1);

    my_strcpy(strAry1, strAry2);
    puts(strAry1);

    system("pause");
    return 0;
}