c - 从文件中读取输入并以 C 中的特定格式存储在数组中

Question

我想从一个文本文件中读取并显示一些输出

输入文件格式:

0 0 3         
0 1 2         
1 3 4         
2 1 4         
3 2 3         
3 1 2         
4 3 4      

每行的第一个数字表示特定的一天(第 0 到 4 天)，每行的第二个和第三个数字表示当天相互发送消息的参与者。我编写了以下 C 代码来显示每天的参与 Actor :

我的示例代码:

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#define B 5 // number of days
#define A 5 // number of total actors

main()
{
    FILE *fp;
    int end = 0;
    int day1, day, i, j, k1, k2;
    int esin[A][A];
    for (i = 0; i < A; i++)  // initializing array
    {
        for (j = 0; j < A; j++)
        {
            esin[i][j] = 0;
        }
    }
    fp = fopen("test.txt", "r"); // the file contains the input
    if (fp == NULL)
    {
        printf("\nError - Cannot open the designated file\n");
    }

    while (end == 0)
    {
        fscanf(fp, "%d", &day);
        day1 = day; // day1 for comparing
        while (day1 == day)
        {
            if (feof(fp))
            {
                end = 1;
                break;
            }
            fscanf(fp, "%d %d", &k1, &k2);

            esin[k1][k2] = 1;// edge creation
            esin[k2][k1] = 1;// edge creation

            fscanf(fp, "%d", &day);
        }

        printf("\nday: %d", day1); // for printing output of a particular day
        for (i = 0; i < A; i++)
        {
            for (j = 0; j < A; j++)
            {
                if (esin[i][j] == 0)
                    continue;
                else
                    printf("\n%d and %d have an edge", i, j);
            }
        }
        for (i = 0; i < A; i++)
        {
            for (j = 0; j < A; j++)
            {
                esin[i][j] = 0;
            }
        }
    }
}

但我没有得到实际输出。例如，我想得到如下输出:

day 0
0 and 3 have an edge
1 and 2 have an edge
day 1
3 and 4 have an edge
day 2
1 and 4 have an edge
day 3
2 and 3 have an edge
1 and 2 have an edge
day 4
3 and 4 have an edge

但是我没有得到这个。我得到:

day 0
0 and 3 have an edge
1 and 2 have an edge
day 3
4 and 2 have an edge
day 4
3 and 2 have an edge
day 3
1 and 2 have an edge
day 3
4 and 2 have an edge

上面的代码有什么问题吗？我需要进行哪些更正才能获得上述类似输出？

Answer 1

在这一行

if(esin[i][j]=0)

你正在分配，但你想比较:

if(esin[i][j] == 0)