Output Functions in C-Programming

The C language provides a set of library functions to perform input and output (I/O) operations. Those functions can read or write any type of data to files.

Here printf(),scanf() functions are included in #include<stdio.h> 
Printf() ---->  to print the Information. 
Scanf()  ----> to read the Values. 

Here clrscr(), getch() functions are included in #include<conio.h> 

Clrscr(); ----> to clear the previous output’s 

Getch(); ----> to get the information or values

Computer displaying result is called output.

If we want to display the information on standard Output device we can use printf().

Printf( ):- 

It is standard Output function which is used to display the information given by the user.

Syntax: 

They are 3 types of syntax's.

Syntax 1: 

printf(" information");
To print information. 

Ex:- 
printf("Computersadda");

Sample Program:-

#include<stdio.h> #include<conio.h> void main()       {      clrscr();            printf("welcome to C-language");       getch();     }

Output:-

welcome to C-language

Sample Program 2:-

#include<stdio.h> #include<conio.h> void main( )      {      clrscr( );            printf("One");            printf("Two");            printf("Three");       getch( );       }

Output:-

OneTwoThree

Syntax 2 :

printf(" control string ",variable name);
To print 1 value.

Ex:- 

printf("%d", a);

Syntax 3: 

printf(" control strings ",variablename1,--- variablename n);
To print more than 1 value.

Ex:- 

printf("%d%d",a,b);

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