Object Oriented Programming with C++, Second Edition

APPENDIX G: SIMPLE C STYLE INPUT–OUTPUT

As C++ is a superset of C, it supports all the facilities of I/O in C. Let us have a brief look at the same.

G.1 I/O OF CHARACTER

As basic data element is character, C offers functions for reading and writing characters. They are putchar() and getchar() .

Let us study a simple program.

Problem: Write a program to study functions getchar() and putchar().

Solution: See Program G.1.

Program G.1 Using getchar() & putchar()

//  io3.cpp#include<stdio.h>int main(){ char ch1,ch2;  ch1 = getchar();  putchar(ch1);  ch2 = getchar();  putchar(ch2);  return 0;}

If you run this program and type ABCD and press return then you will get the output as shown below:

OUTPUT  ABCD  AB

If you run this program, and type ...