The C I/O subset of the C++ standard library implements C-style stream input/output operations. The <cstdio> header file provides general file support and provides functions with narrow and multibyte character input/output capabilities, while the <cwchar> header file provides functions with wide character input/output capabilities. File location Returns the current file position indicator std::ftell long ftell( […]
Tag: ftell
Standard IO process thread functions: fopen, perror, fclose, fprintf, fscanf, fputc, fgetc, buffer, fputs, fgets, fwrite, fread, fseek, ftell,
Standard IO functions: 1. Stream pointer (FILE*): FILE* fp=fopen(“1.txt”,”r”): This fp is a stream pointer. When this file is opened in read-only mode, a buffer will be applied for at the same time. At this time, the stream pointer fp It will contain the information of the current reading position of the file, if it […]
File operations and related functions fwrite, fread, fseek, ftell, rwind, feof
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