Write a Program For Use Of Putchar( ) And Getchar( ) Function

AIM: Write a program for use of putchar( ) and getchar( ) function.

LOGIC:

C provides other ways to read and write single characters.

In particular, we can use the getchar() and putchar() functions instead of calling scanf and printf.

putchar() writes a single character:

putchar (ch);

Each time getchar is called, it reads one character, which it returns. In order Save this character, we must use assignment to store it in a variable:

ch = getchar();

 

/* reads a character and stores it in ch */ getchar actually returns an int value rather than a char value (the reason will be discussed in later chapters). As a result, it's not unusual for a variable to have type int rather than char if it will be used to store a character read by getchar. Like scanf, getchar doesn't skip white-space characters as it reads. Using getchar and putchar (rather than scanf and printf) saves lime when theprogram is executed; getchar and putchar are fast for two reasons. First, they're much simpler than scanf and printf, which are designed to read and write many kinds of data in a variety of formats. Second, getchar and putchar are usual implemented as macros for additional speed.

getchar() has another advantage over  Scanf :

Because it returns the character that it reads, getchar lends itself to various C idioms, including loops that search for a character or skip over all occurrence of character.

OUTPUT :