fseek(pFile, 0, SEEK_SET);
时间: 2024-03-31 10:35:57 浏览: 15
fseek 函数用于移动文件指针到指定位置,其参数包括文件指针、偏移量和起始位置。在这里,第一个参数 pFile 是文件指针,第二个参数 0 表示偏移量为 0,即将文件指针移动到文件开头,第三个参数 SEEK_SET 表示起始位置为文件开头。因此,该语句的作用是将文件指针移动到文件开头,以便在后续操作中对文件进行读写。
相关问题
fseek SEEK_SET
下面是使用fseek函数设置文件指针stream的位置,使其指向文件开头的例子:
```c
#include <stdio.h>
int main() {
FILE *fp;
char c;
fp = fopen("test.txt", "r");
if (fp == NULL) {
printf("Failed to open file\n"); return 1;
}
// 设置文件指针stream的位置,使其指向文件开头
fseek(fp, 0, SEEK_SET);
// 读取文件中的字符并输出
while ((c = fgetc(fp)) != EOF) {
printf("%c", c);
}
fclose(fp);
return 0;
}
```
fseek(fSrc, 0, SEEK_SET);
This line of code sets the file pointer to the beginning of the file pointed to by the file stream "fSrc". The "fseek" function is used to set the file position indicator for the stream, and the second argument "0" means that the offset is zero, i.e. the beginning of the file. The third argument "SEEK_SET" specifies the reference point for the offset, which is the beginning of the file. Therefore, this line of code resets the file pointer to the start of the file.