首先 strcat是追加字符串的函数
include<stdio.h>
include<stdlib.h>
char* my_strcat(char* dest, char* src)
{
char* ret = dest;
while (*dest != '\0')
{
dest++;
}
while (*dest = *src)
{
dest++;
src++;
}
return ret;
}
int main()
{
char arr1[] = "abc";
char arr2[] = "defcd";
my_strcat(arr1, arr2);
printf("%s", arr1);
system("pause");
return 0;
}