File manipulation - Characters that cannot be correctly removed from the output file

The following answers are quoted from GPT-3 model, please use them wisely:

#include 
#include 

int main()
{
    FILE *fp;
    fp = fopen("111.txt", "r"); //以只读方式打开文件 

    if (fp == NULL)
    {
        printf("flaut!");
        exit(0);
    }
    
    char c;
    while ((c = fgetc(fp)) != EOF) //从文件中一次读取一个字符，直到遇到文件末尾 
    {
        if (c != '@') //不是输入结束符
            printf("%c", c);
        else
            break;
    }
    
    fclose(fp);
    return 0;
}

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This answer quotes ChatGPT

Modify the code as follows

#include 
#include 

int main() {
    FILE *fp;
    fp = fopen("111.txt", "r+");

    if (fp == NULL) {
        printf("flaut!");
        exit(0);
    }

    char c;
    while ((c = fgetc(fp)) != '@') {
        printf("%c", c);
    }

    fclose(fp);

    return 0;
}

• helps you find a similar problem, you can look at: https://ask.csdn.net/questions/7634598 < / font > < / a > < / li > < li > this blog, you can refer to below: < font size = "3" > file input/output operations < / font > < / a > < / li >

Please see the comments for the changes:

#include
#include
int main()
{
    FILE *fp;
    fp=fopen("111.txt","r+");
    if(fp==NULL)
    {
        printf("flaut!");exit(0);
    }

    char c;
    while((c=fgetc(fp))!='@')  //(c=fgetc(fp)!='@') 修改
    {
        printf("%c",c);    
    }
    fclose(fp);
    return 0;   //修改
}