狗屁不通的垃圾博文——純C實現字符串拷貝(面試常考)

#include <stdio.h>

/*
復制字符串
*/
void cpystr(char * source, char * target)
{
    while(*target++ = *source++);
}

/*
取得字符串的長度
*/
int strlen(char * str)
{
    int size = 0;
    while(*str++ != '\0')
    {
        size++;
    }
    return size;
}

int main(void)
{
    char* s = "Hello, World.";
    char c[10];
    char * p = c;

    cpystr(s, p);

    printf("%s\n", p);
    printf("%d\n", strlen(p));

    return 0;
}

#include <stdio.h>

/*
復制字符串
*/
void cpystr(char * source, char * target)
{
    while(*target++ = *source++);
}

/*
取得字符串的長度
*/
int strlen(char * str)
{
    int size = 0;
    while(*str++ != '\0')
    {
        size++;
    }
    return size;
}

int main(void)
{
    char* s = "Hello, World.";
    char c[strlen(s)];
    char * p = c;

    cpystr(s, p);

    printf("%s\n", p);
    printf("%d\n", strlen(p));

    return 0;
}

strlen(s)];