C语言中获取文件光标位置

获取文件光标位置的方法

c
int fseek(FILE *stream, long int offset, int origin);

c
FILE *fp = fopen("example.txt", "r");
fseek(fp, 10, SEEK_SET);

c
long int ftell(FILE *stream);

c
FILE *fp = fopen("example.txt", "r");
long int position = ftell(fp);
printf("当前光标位置：%ld\n", position);

c
#include 
int main() {
    FILE *fp = fopen("example.txt", "r");
    if (fp == NULL) {
        printf("文件打开失败！\n");
        return 1;
    }
    
    // 将文件指针定位到文件开头的第10个字节处
    fseek(fp, 10, SEEK_SET);
    
    // 获取文件指针当前位置的偏移量
    long int position = ftell(fp);
    printf("当前光标位置：%ld\n", position);
    
    fclose(fp);
    return 0;
}