运行 - 在C文件处理时检查失败＃2 [英] Run - Time Check Failure #2 in C File processing

问题描述

运行时检查失败＃2 - 围绕堆栈变量文件名已损坏

我的code ++工程，每当我试图处理第一个内存位置。
我能正确处理.txt文件，我可以打印出来。
然而，当我问的第二个存储位置，程序崩溃。
我试图增加文件名的大小，我也是关闭的第一个文件，让我无言以对。任何帮助是可以接受的！谢谢!!

这是输出的照片

这是我的code：

 的#include＆LT;＆stdio.h中GT;的#define SIZE 100 // 100个条目（在文件100lines）
＃定义感应器N 100诠释的main（）
{
    FILE * FPTR;
    字符文件名[1000];    CHAR dummy1 [1]; //无效字符，帮助我抹去的是使用时得到缓冲（）
    INT numberOfSensors;
    INT时间[感应器N] [SIZE]
    浮powerConsumption [感应器N] [SIZE]    INT sensor_num;
    INT的count1 = 0;    的printf（请输入传感器的数目：）;
    scanf函数（％d个，＆安培; numberOfSensors）;    //问计于链接
    // numberOfSensors  -  1，因为，例如，如果我们只想要2个传感器，我们需要sensor0只有SENSOR1
    为（sensor_num = 0; sensor_num＆下; =（numberOfSensors  -  1）; sensor_num ++）
    {
        的printf（请输入传感器％d个\\ n文件位置，sensor_num）;
        得到（dummy1）; //清除缓冲
        得到（文件名）;        FPTR = FOPEN（文件名，R）;        //如果文件无法打开，然后显示与错误信息
        如果（FPTR == NULL）
        {
            的printf（错误打开文件％s \\ n！，文件名）;
            的printf（请重新启动程序\\ n）;
            返回0; //退出程序
        }        其他
        {
            //循环，让我们阅读和每个值存储到其各自的阵列打印所有文件            而（！的feof（FPTR））
            {
                //存储在各自的阵列的所有值
                // sensor_num是传感器数
                // COUNT1是我们从文件中读取的行号
                的fscanf（FPTR，％D％F，＆安培;时间[sensor_num] [COUNT1]，和放大器; powerConsumption [sensor_num] [COUNT1]）;                //确保我们所储存的所有值
                //注意：不要注释以下行，以检查是否所有的值存储
                fprintf中（标准输出，％D％6.2f \\ n，时间[sensor_num] [COUNT1]，powerConsumption [sensor_num] [COUNT1]）;
                COUNT1 ++;
            }
        }
        //关闭文件
        FCLOSE（FPTR）;
        }
    }
}
 

解决方案

由于马丁詹姆斯说字符dummy1 [1]; 是绝对不行的。

使用与fgets（）而不是获得（），所以不是

 获取（dummy1）; //清除缓冲区
得到（文件名）;`
 

尝试，

与fgets（文件名的sizeof（文件名），标准输入）;

Run-Time Check Failure #2 - Stack around the variable 'filename' was corrupted.

My code works whenever I try to process the first memory location. I can process the .txt file correctly, and I can print it. Nevertheless, when I ask for a second memory location, the program crashes. I tried to increase the size of filename, and I am also closing the first file, so I am clueless. Any help is acceptable! Thank you!!

This is a photo of the output

This is my code:

#include <stdio.h>

#define SIZE 100 //100 entries (100lines on a file)
#define SENSORN 100

int main()
{
    FILE *fptr;
    char filename[1000];

    char dummy1[1];//dummy character that help me to erase what is the buffer when using gets()
    int numberOfSensors;
    int time[SENSORN][SIZE];
    float powerConsumption[SENSORN][SIZE];

    int sensor_num;
    int count1 = 0;

    printf("Please enter the number of sensors: ");
    scanf("%d", &numberOfSensors);

    //Asking for the link 
    //numberOfSensors - 1 because for example, if we want only 2 sensors we need sensor0 and sensor1 only
    for (sensor_num = 0; sensor_num <= (numberOfSensors - 1); sensor_num++)
    {
        printf("Please enter the file location for sensor %d\n", sensor_num);
        gets(dummy1);//clearing the buffer
        gets(filename);

        fptr = fopen(filename, "r");

        //if file cannot be opened, then display and error message
        if (fptr == NULL)
        {
            printf("Error opening the file! %s \n", filename);
            printf("Please restart the program \n");
            return 0; //exit the program
        }

        else
        {
            //Loop that let us read and print all the file by storing each value to its respective array

            while (!feof(fptr))
            {
                //storing all the values in their respective array
                //sensor_num is the sensor number
                //count1 is the line number we are reading from the file
                fscanf(fptr, "%d %f", &time[sensor_num][count1], &powerConsumption[sensor_num][count1]);

                //making sure we have all the values stored
                //Note: do not comment the following line in order to check that all values are stored
                fprintf(stdout, "%d %6.2f \n", time[sensor_num][count1], powerConsumption[sensor_num][count1]);
                count1++;
            }
        }
        //closing file
        fclose(fptr);
        }
    }
}

解决方案

As Martin James said char dummy1[1]; is an absolute no-no.

Use fgets() instead of gets(), so instead of

gets(dummy1);//clearing the buffer
gets(filename);`

try,

fgets( filename, sizeof(filename) , stdin );

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