c - print multiple lines by getchar and putchar -

im beginner learning c programming language , using microsoft visual c++ write , test code.

below program in c text(section 1.5.1) copy input output through putchar() , getchar():

#include <stdio.h> int main(void) {   int c;     while ((c = getchar()) != eof)          putchar(c);     return 0;} 

the program print characters entered keyboard every time pressing enter.as result,i can enter 1 line before printing. can't find way enter multi-line text keyboard before printing.

is there way , how let program input , output multi-line text keyboard?

sorry if basic , ignorant question.

appreciate attention , in advance.

some clever use of pointer arithmetic want:

#include <stdio.h>  /* printf , fgets */ #include <string.h> /* strcpy , strlen */ #define size 255 /* using size nicer magic numbers */  int main() {     char input_buffer[size];        /* take user input */     char output_buffer[size * 4];   /* storing multiple lines let's make big enough */      int offset = 0; /* storing input @ different offsets in output buffer */      /* null error checking, if user enters new line, input terminated */     while(fgets(input_buffer, size, stdin) != null && input_buffer[0] != '\n')      {         strcpy(output_buffer + offset, input_buffer); /* copy input @ offset output */         offset += strlen(input_buffer);               /* advance offset length of string */     }      printf("%s", output_buffer); /* print our input */      return 0; } 

and how use it:

$ ./a.out  adas asdasdsa adsa  adas asdasdsa adsa 

everything parroted :)

i've used fgets, strcpy , strlen. useful functions (and fgets recommended way take user input).