c - c中的简单二维数组，段错误(核心转储)-6ren

c - c中的简单二维数组，段错误(核心转储)

转载作者：行者123 更新时间：2023-11-30 18:17:51

我的代码

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int  i=0,totalNums,totalNum,j=0;
    size_t count;
    float numbers[20][100];
    char *line = malloc(100);

    FILE *myFile;
    myFile = fopen("vel.txt", "r");


    if (myFile == NULL)
    {
        printf("Error Reading File\n");
        exit (0);
    }

    while(getline(&line, &count, myFile)!=-1) {
        for (; count > 0; count--, j++)
            sscanf(line, "%f", &numbers[i][j]);
        i++;
    }

    totalNums = 100;
    totalNum = 20;
    for (i=0 ; i<totalNums ; i++) {
      for (j=0 ; j<totalNum ; j++) {
        printf("\n%f",  numbers[i][j]);
      }
    }
    fclose(myFile);
    return 0;
}

我的目标是读取二维数组。我的vel.txt

2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0 2900.0
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5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0
5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0
5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0 5400.0

我已经用 gcc 编译了我的代码，但我得到了:

milenko@milenko-HP-Compaq-6830s:~$ ./n1Segmentation fault (core dumped)

为什么？

最佳答案

一些错误:

floatnumbers[20][100]; 是一个 20 x 100 数组。这:
```
totalNums = 100;
totalNum = 20;
for (i=0 ; i<totalNums ; i++) {
  for (j=0 ; j<totalNum ; j++) {
    printf("\n%f",  numbers[i][j]);
  }
}
```
迭代 100 x 20 数组。使用比“totalNums”更好的变量名称(例如 max_x 和 max_y)可能会消除此错误。
count 在使用前未初始化。启用编译器警告。
你不能在任何地方free()变量line。实际上根本没有理由在这里使用动态分配。

关于c - c中的简单二维数组，段错误(核心转储)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36984249/

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