gets() and puts() Function in C Examples

Introduction

The gets() allows the user to enter the space-separated strings. It returns the string entered by the user.

gets():

• gets() function is used to scan a line of text from a standard input device.
• This function will be terminated by a new line character.
• The new line character won’t be included as part of the string. The string may include white space characters.
• Syntax :char *gets(char *s);
• This function is declared in the header file stdio.h.
• It takes a single argument. The argument must be a data item representing a string. On successful completion, shall return a pointer to string s.

puts():

puts():
• The C library function int puts(const char *str) writes a string to stdout up to but not including the null character.A newline character is appended to the output.
• Example: int puts(char const*str)
• Parameters: str-this is the C string to be written
• Return value: If successful, non-negative value is returned. On error, the function returns EOF.

Example 1:

 #include<stdio.h>  
 void main ()  
 {  
    char s[30];  
    printf("Enter the string? ");  
    gets(s);  
    printf("You entered %s",s);  
 } 

Output:

 Enter the string? 
 aimtocode is the best
 You entered aimtocode is the best

Example 2:

 #include <stdio.h>
 #include <conio.h>

 void main( ) {

 char name[20];

 printf( "Enter your name : ");
 gets(name);

 printf( "Your name is : ");
 puts(name);

 getch ();
 }

Output:

 Enter your name :
 Your name is : Prayag