编写程序实现库函数strcat的功能

#include<stdio.h>

#include<assert.h>

#include<windows.h>

#include<string.h>

char *my_strcat(char *pdest, const char *psrc)

{
assert(*pdest != NULL);
assert(*psrc != NULL);
char *ret = pdest;
while (*pdest != '\0')
{
*pdest++;
}
while (*pdest++ = *psrc++)
{
;
}

return ret;

}

int main()

{
char arr1[10] = { 'h', 'e', 'l', 'l', 'o' };
char arr2[10] = { ' ', 'w', 'o', 'r', 'l', ' d' };
printf("%s\n", my_strcat(arr1, arr2));

system("pause");
return 0;

}