Commit 697475e8 authored by Chaigidel's avatar Chaigidel
Browse files

fix: 代码混乱

parent 10f315ac

docs/misc/io.md

+69 −59
Original line number Diff line number Diff line
@@ -214,16 +214,26 @@ c = read<__int128>(); 


## 完整带调试版



关闭调试开关时使用 `fread()`,  `fwrite()`，退出时自动析构执行 `fwrite()` 。



开启调试开关时使用 `getchar()`,  `putchar()`，便于调试。



```cpp

#define DEBUG 1  //调试开关

namespace IO {

#define isdigit(x) x >= '0' && x <= '9'

const int MAXSIZE = 1 << 20;

// #define DEBUG 1  //调试开关

struct IO {

#define MAXSIZE (1 << 20)

#define isdigit(x) (x >= '0' && x <= '9')

    char buf[MAXSIZE], *p1, *p2;

    char pbuf[MAXSIZE], *pp;

#if DEBUG

#else

    IO() : p1(buf), pp(pbuf) { p2 = buf + fread(buf, 1, MAXSIZE, stdin); }

    ~IO() { fwrite(pbuf, 1, pp - pbuf, stdout); }

#endif

    inline char gc() {

#if DEBUG  //调试，可显示字符

        return getchar();

#endif

  static char buf[MAXSIZE], *p1 = buf + MAXSIZE, *p2 = buf + MAXSIZE;

        if (p1 == p2) p2 = (p1 = buf) + fread(buf, 1, MAXSIZE, stdin);

        return p1 == p2 ? -1 : *p1++;

    }
@@ -238,9 +248,10 @@ inline void read(T &x) { 
        register char ch = gc();

        for (; !isdigit(ch); ch = gc())

            if (ch == '-') sign = 1;

  for (; isdigit(ch); ch = gc()) x = x * 10 + ch - '0';

        for (; isdigit(ch); ch = gc()) x = x * 10 + (ch - '0');

        if (ch == '.')

    for (ch = gc(); isdigit(ch); ch = gc()) tmp /= 10.0, x += tmp * (ch - 48);

            for (ch = gc(); isdigit(ch); ch = gc())

                tmp /= 10.0, x += tmp * (ch - '0');

        if (sign) x = -x;

    }

    inline void read(char *s) {
@@ -255,29 +266,28 @@ inline void read(char &c) { 
            ;

    }

    inline void push(const char &c) {

  char pbuf[MAXSIZE], *pp = pbuf;

#if DEBUG  //调试，可显示字符

        putchar(c);

#else

        if (pp - pbuf == MAXSIZE) fwrite(pbuf, 1, MAXSIZE, stdout), pp = pbuf;

        *pp++ = c;

#endif

    }

    template <class T>

    inline void write(T x) {

        if (x < 0) x = -x, push('-');  // 负数输出

        static T sta[35];

        T top = 0;

        do {

            sta[top++] = x % 10, x /= 10;

        } while (x);

#if DEBUG  //调试，可显示字符

  while (top) putchar(sta[--top] + '0');

  return;

#endif

        while (top) push(sta[--top] + '0');

    }

    template <class T>

    inline void write(T x, char lastChar) {

  write(x), putchar(lastChar);  //打印末尾字符 ex.'\n'

        write(x), push(lastChar);

    }

}  // namespace IO

using namespace IO;

} io;

```



## 参考