Explain the input /output functions.

Explain the input /output functions.

A. Input output functions are divided into two types

1. Formatted functions

2. Unformated functions

Formatted functions.

1.printf().

2.scanf()

printf()

It is a output function is used to display the message or out put on the monitor

It is a callby value function. It is predefined in <stdio.h>.

Syntax.

printf(“control string”, variable);

printf(“message”);

For more information click on printf()

 scanf()

It is used to read the data from keyboard at run time

It is a input ()

It is predefined in <stdio.h>

Syntax.

scanf(“control string”,&var1,&var2);

scanf(“%d%d”,&a,&b);

It is a callby function.

For more information click on scanf()

scanf("%[^\n]

 Unformatted functions.

1.put char()

2.get char()

3.puts()

4.gets()

 putchar()

It is a similar to printf()

It is used to display the single character or variable on the screen

In this unformatted () are no need to use format specifiers

Ex int ch=10;

     putchar(ch);

getchar()

It is used to read a character from the keyboard and stores into the lefthand side variable.

Ex  char ch;

      ch=getchar();

puts()

It is also similar to printf()

It displays the output on the screen and curser comes to next line automatically

Ex  float d=10.56f;

 puts(d);

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Format Specifiers

Download input/output statements

printf()

scanf()

scanf("%[^\n]