帮我用C++写一个将txt文件数据画成直线并可视化的代码

好的，下面是将txt文件数据画成直线并可视化的C代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <graphics.h>

#define MAX_POINTS 1000

typedef struct point {
    int x;
    int y;
} Point;

Point points[MAX_POINTS];
int num_points = 0;

void draw_line(Point p1, Point p2) {
    line(p1.x, p1.y, p2.x, p2.y);
}

void draw_graph(int maxx, int maxy) {
    int gd = DETECT, gm;
    initgraph(&gd, &gm, NULL);
    setcolor(RED);
    for (int i = 1; i < num_points; i++) {
        draw_line(points[i-1], points[i]);
    }
    setcolor(WHITE);
    line(0, maxy / 2, maxx, maxy / 2);   // X轴
    line(maxx / 2, 0, maxx / 2, maxy);   // Y轴
    closegraph();
}

int main(int argc, char *argv[]) {
    if (argc != 2) {
        printf("Usage: %s filename\n", argv[0]);
        exit(1);
    }
    FILE *fp = fopen(argv[1], "r");
    if (fp == NULL) {
        printf("Can't open file %s\n", argv[1]);
        exit(1);
    }
    int x, y;
    int maxx = 0, maxy = 0;
    while (fscanf(fp, "%d %d", &x, &y) == 2) {
        Point p = {x, y};
        points[num_points] = p;
        num_points++;
        if (x > maxx) maxx = x;
        if (y > maxy) maxy = y;
    }
    fclose(fp);
    draw_graph(maxx + 100, maxy + 100);
    return 0;
}

这个代码读取一个包含点坐标的文本文件，并将它们连接成直线，然后在图形窗口中显示。

如果您需要进一步定制代码以满足您的需求，请在评论区留言，我将根据您的要求优化代码。