c语言代码练习39

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
#include <string.h>

int main()
{
    char arr1[20] = "abcdef";
    char arr2[] = "yue";
    strcat(arr1, arr2);
    printf("%s", arr1);
    return 0;
}

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
#include <string.h>

char* my_strcat(char* dest, char* str)
{
    char* ret = dest;
    assert(dest);
    assert(str);
    while(*dest != '\0')
    {
        dest++;
    }
    while(*dest++ = *str++)
    {
        ;
    }
    return ret;
}

int main()
{
    char arr1[20] = "abcdef";
    char arr2[] = "yue";
    my_strcat(arr1, arr2);
    printf("%s", arr1);
    return 0;
}