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關(guān)于c語言中用于txt的函數(shù)的信息

關(guān)于C語言中讀取TXT文本的內(nèi)容

1通過fopen函數(shù)打開文本,例如file

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*fp=fopen("in.txt","r");//返回一個(gè)file類型的句柄

2然后就可以通過fcanf()函數(shù)對txt文本進(jìn)行讀取

3操作完文本之后用fclose()函數(shù)

關(guān)閉已經(jīng)打開的文件。

#include

int main()

{

int data;

file *fp=fopen("in.txt","r");

if(!fp)

{

printf("can't open file\n");

return -1;

}

while(!feof(fp))

{

fscanf(fp,"%d",data);

printf("%4d",data);

}

printf("\n");

fclose(fp);

return 0;

}

C語言如何讀取txt文本里面的內(nèi)容?

C語言可以使用fopen()函數(shù)讀取txt文本里。

示例:

#include stdio.h

FILE *stream, *stream2;

void main( void )

{

int numclosed;

/* Open for read (will fail if file "data" does not exist) */

if( (stream? = fopen( "data", "r" )) == NULL )

printf( "The file 'data' was not opened\n" );

else

printf( "The file 'data' was opened\n" );

/* Open for write */

if( (stream2 = fopen( "data2", "w+" )) == NULL )

printf( "The file 'data2' was not opened\n" );

else

printf( "The file 'data2' was opened\n" );

/* Close stream */

if(fclose( stream2 ))

printf( "The file 'data2' was not closed\n" );

/* All other files are closed: */

numclosed = _fcloseall( );

printf( "Number of files closed by _fcloseall: %u\n", numclosed );

}

擴(kuò)展資料

使用fgetc函數(shù)

#include stdio.h

#include stdlib.h

void main( void )

{

FILE *stream;

char buffer[81];

int? i, ch;

/* Open file to read line from: */

if( (stream = fopen( "fgetc.c", "r" )) == NULL )

exit( 0 );

/* Read in first 80 characters and place them in "buffer": */

ch = fgetc( stream );

for( i=0; (i 80 ) ( feof( stream ) == 0 ); i++ )

{

buffer[i] = (char)ch;

ch = fgetc( stream );

}

/* Add null to end string */

buffer[i] = '\0';

printf( "%s\n", buffer );

fclose( stream );

}

C語言用什么函數(shù) 讀取txt

寫幾段代碼就是了

char s[100];

FILE *fp;

fp=fopen("d:\\1.txt","r");//打開文件,注意是兩個(gè)\\

gets(s,50,fp);從文件中讀取49個(gè)字符到s中

名稱欄目:關(guān)于c語言中用于txt的函數(shù)的信息
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