为什么fgets没有读取到\n

[jingxingxiaozhang]

int main()
{
char buf[100] = { 0 };
if (fgets(buf, sizeof(buf), stdin) != NULL)
{
printf("buf:%s", buf);

}
return 0;
}

fgets是读到\n结束，并存入\n的，但是为什么我输出buf，没有看到\n？？？？？？

[ipqtjmqj]

因为被控制台吃了，控制台通过换行符判断一次输入结束

[ipqtjmqj]

你可以试着从文件读，就可以读到换行符了

[赵4老师]

不要妄下结论。 fgets, fgetws Get a string from a stream. char *fgets( char *string, int n, FILE *stream ); wchar_t *fgetws( wchar_t *string, int n, FILE *stream ); Function Required Header Compatibility fgets <stdio.h> ANSI, Win 95, Win NT fgetws <stdio.h> or <wchar.h> ANSI, Win 95, Win NT For additional compatibility information, see Compatibility in the Introduction. Libraries LIBC.LIB Single thread static library, retail version LIBCMT.LIB Multithread static library, retail version MSVCRT.LIB Import library for MSVCRT.DLL, retail version Return Value Each of these functions returns string. NULL is returned to indicate an error or an end-of-file condition. Use feof or ferror to determine whether an error occurred. Parameters string Storage location for data n Maximum number of characters to read stream Pointer to FILE structure Remarks The fgets function reads a string from the input stream argument and stores it in string. fgets reads characters from the current stream position to and including the first newline character, to the end of the stream, or until the number of characters read is equal to n – 1, whichever comes first. The result stored in string is appended with a null character. The newline character, if read, is included in the string. fgets is similar to the gets function; however, gets replaces the newline character with NULL. fgetws is a wide-character version of fgets. fgetws reads the wide-character argument string as a multibyte-character string or a wide-character string according to whether stream is opened in text mode or binary mode, respectively. For more information about using text and binary modes in Unicode and multibyte stream-I/O, see Text and Binary Mode File I/O and Unicode Stream I/O in Text and Binary Modes. Generic-Text Routine Mappings TCHAR.H Routine _UNICODE & _MBCS Not Defined _MBCS Defined _UNICODE Defined _fgetts fgets fgets fgetws Example /* FGETS.C: This program uses fgets to display * a line from a file on the screen. */ #include <stdio.h> void main( void ) { FILE *stream; char line[100]; if( (stream = fopen( "fgets.c", "r" )) != NULL ) { if( fgets( line, 100, stream ) == NULL) printf( "fgets error\n" ); else printf( "%s", line); fclose( stream ); } } Output /* FGETS.C: This program uses fgets to display Stream I/O Routines See Also fputs, gets, puts

[paschen]

http://en.cppreference.com/w/c/io/fgets