C gets() and puts() functions (C language)

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C gets() and puts() functions

The gets() and puts() are declared in the header file stdio.h. Both the functions are involved in the input/output operations of the strings.

C gets() function

The gets() function enables the user to enter some characters followed by the enter key. All the characters entered by the user get stored in a character array. The null character is added to the array to make it a string. The gets() allows the user to enter the space-separated strings. It returns the string entered by the user.

Declaration

char[] gets(char[]);  

 

Reading string using gets()

#include<stdio.h>  

void main ()  

{  

    char s[30];  

    printf("Enter the string? ");  

    gets(s);  

    printf("You entered %s",s);  

}  

Output

Enter the string? 
hi students
You entered hi students

C puts() function

The puts() function is very much similar to printf() function. The puts() function is used to print the string on the console which is previously read by using gets() or scanf() function. The puts() function returns an integer value representing the number of characters being printed on the console. Since, it prints an additional newline character with the string, which moves the cursor to the new line on the console, the integer value returned by puts() will always be equal to the number of characters present in the string plus 1.

Declaration

int puts(char[])  

Let's see an example to read a string using gets() and print it on the console using puts().

#include<stdio.h>  

#include <string.h>    

void main()

{    

char name[50];    

printf("Enter your name: ");    

gets(name); //reads string from user    

printf("Your name is: ");    

puts(name);  //displays string    

}    

Output:

Enter your name: Sonoo Jaiswal
Your name is: Sonoo Jaiswal

 

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