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Linux C_純C/C++ 確認檔案是否存在和抓取檔案大小 GITHUB: https://github.com/jash-git/Jash_LinuxC/tree/master/純C確認檔案是否存在和抓取檔案大小 code: #include // FILE... // get the file size. long getfilesize(FILE *pFile) { // check FILE*. if( pFile == NULL) { return -1; } // get current file pointer offset. long cur_pos = ftell(pFile); if(cur_pos == -1) { return -1; } // fseek to the position of file end. if(fseek(pFile, 0L, SEEK_END) == -1) { return -1; } // get file size. long size = ftell(pFile); // fseek back to previous pos. if(fseek(pFile, cur_pos, SEEK_SET) == -1) { return -1; } // deal returns. return size; } int main() { // open a file. FILE *pFile = fopen("c:\\123.bat", "r"); if(pFile == NULL) { printf("error.\n"); return 0; } // get the file size. printf("the file size: %ld bytes\n", getfilesize(pFile)); // close the file. fclose(pFile); return 0; }