如何将控制台输出固定到位 [英] How to make console output fixed in place

问题描述

我的LAME(v3.99.5)通过在控制台中上移x行并覆盖前几行来在控制台中输出进度.很酷.

My LAME (v3.99.5) outputs progress in console by moving up x lines in the console and overwriting the previous lines. It's pretty cool.

我已经阅读了不同的帖子仅使用"\ r" 而不是"\ n" 即可实现单行的这种行为-尽管该帖子是针对Ruby的，但似乎至少在我的系统上与 C 相同:

I've read in a different post that such behavior for a single line can be achieved with a mere "\r" instead of "\n" - although the post was for Ruby, it seems to be the same for C on my system at least:

#include <stdio.h>
#include <time.h>

int main() {

    time_t t;
    time_t t2;

    time(&t);
    t2 = t;

    printf("%u\r", (unsigned int)t);        
    fflush(stdout);

    while (1) {
        if (t2 - t > 0) {
            time(&t);
            printf("%u\r", (unsigned int)t);        
            fflush(stdout);
        }
        time(&t2);
    }

    return 0;
}

该帖子进一步建议，可以使用 curses库来制作相同的行为多行.

The post further suggests a curses library can be used to make the same behavior multi-line.

C 中的此类代码的样板示例是什么?

What would be a boilerplate example of such code in C?

推荐答案

根据 Windows:

void SetCursorPos(int XPos, int YPos)
{
    COORD Coord;
    Coord.X = XPos;
    Coord.Y = YPos;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), Coord);
}

Linux:

void SetCursorPos(int XPos, int YPos)
{
    printf("\033[%d;%dH", YPos+1, XPos+1);
}

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