Посимвольный ввод-вывод

#include <stdio.h>
#define MAXSIZE 32767
 
void reverse( int s1[] );
 
int main( void )
{
    int STREAMN1[MAXSIZE];
    int i, c;
    
    i = 0;
    while( (c = getc(stdin)) != EOF && i < MAXSIZE - 1 )
    STREAMN1[i++] = c;
    if( c == '\n' )
    STREAMN1[i++] = c;
    STREAMN1[i] = '\0';
    reverse( STREAMN1 );
    
    return 0;
}
 
void reverse( int s1[] )
{
    int i = 0;
    
    if( s1[i] )
    reverse( s1 + 1 );
    putc( s1[i], stdout );
    return;
}

#include <stdio.h>
#include <stdlib.h>
 
int main( int argc, char *argv[] )
{
    int c, i, j;
    FILE *p;
    
    if( argc < 2 ) {
    puts( "Enter output file name" );
    exit( EXIT_FAILURE );
    }
    if( (p = fopen( argv[1], "w+" )) == NULL ) {
    printf( "Error: couldn't creat file %s", argv[1] );
    exit( EXIT_FAILURE );
    }
    puts( "***End Of File (EOF) signal for exit <CTRL+d>***" );
    while( (c = getc(stdin)) != EOF )
    fputc( c, p );
    rewind( p );
    printf( "\nHow many characters you want to read?: " );
    scanf( "%d", &i );
    if( i < 0 ) {
    puts( "Error: not valid value" );
    exit( EXIT_FAILURE );
    }
    c = fgetc( p );
    for( j = 0; j < i && !feof(p); ++j ) {
    fputc( c , stdout );
    c = fgetc( p );
    }
    fclose(p);
    exit( EXIT_SUCCESS );
}