这是一个用于查找文件大小的C程序。
Begin function findfileSize() Open a file pointer fp in read only mode. If fp is equals to null then Print “File not found” and return -1. Else count the file size. Close the file. Put the file pointer at the beginning of the file Declare a integer variable result and initialize it with the output of the ftell() function. Close file pointer fp. Return result. End
#include <stdio.h> int findfileSize(char f_n[]) { FILE* fp = fopen(f_n, "r"); // opening a file in read mode if (fp == NULL) // checking whether the file exists or not { printf("File Not Found!\n"); return -1; } fseek(fp, 0L, SEEK_END); int res = ftell(fp); //counting the size of the file fclose(fp); //closing the file return res; } int main() { char f_n[] = { "b.txt" }; //file name is “b.txt” whose size is to be determined int result = findfileSize(f_n); if (result != -1) printf("Size of the file is %ld bytes \n", result); //printing the file size return 0; }
Size of the file is 2649 bytes
以上就是C程序以查找文件大小的详细内容,更多请关注php中文网其它相关文章!
每个人都需要一台速度更快、更稳定的 PC。随着时间的推移,垃圾文件、旧注册表数据和不必要的后台进程会占用资源并降低性能。幸运的是,许多工具可以让 Windows 保持平稳运行。
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号